Books that could change your health for better

These are good books to begin with when you start your Intermittent Fasting journey

  1. Fast. Feast. Repeat by Gin Stephens is the book for beginners on an Intermittent Fasting journey. It’s the book that started it all for me.
  2. Why We Get Sick by Benjamin Bikman is a must read if you want to really understand metabolic syndrome origins and what to do about it.
  3. The Complete Guide To Fasting by Jason Fung is the book that tells you everything there is to know about fasting. I review it from time to time it to this day.

Now that you’ve read first three books, below come additional three you couldn’t miss

  1. Why We Get Fat by Gary Taubes tells you why the obesity and diabetes 2 are caused by sugar and starchy food.
  2. Fat Chance by Robert Lustig will teach you why we get fat from biological point of view. And fructose is poison.
  3. The Intermittent Fasting Revolution by Mark Mattson talks about evolutionary origins of fasting and delves into physiology of fasting. Mark fasts for mor than 30 years himself doing 18:6.

It’s time to delve a little bit into history of why sugar (fructose) is bad for you

  1. The Case Against Sugar by Gary Taubes talks about history of sugar usage and why it’s the main cause of diabetes 2 and other diseases.
  2. The Case For Keto by Gary Taubes is an opposite of the book above.
  3. Metabolical by Robert Lustig looks at the obesity and metabolic syndrome in a systematic way and again highlights that sugar and particularly fructose is poison.

The books below will be helpful in applying practical advice to lose weight by fasting

  1. The Every Other Day Diet by Krista Varady is dated, but still has good advice about alternate day fasting. Pay attention, that she is a representative of the flawed and wrong hypothesis of calories in equal calories out.
  2. The Obesity Code by Jason Fung will explain you why we get obese and what to do about it.
  3. Drop Acid by David Perlmutter explains why fructose is the main culprit behind elevated levels of uric acid which causes gout and what to do about it.

How to achieve a goal? A simple working algorithm

How to achieve a goal? A simple working algorithm


1. Set a goal with a deadline
2. Write a plan on how to get there
3. Track your progress daily
4. Consider sharing you goal publicly
5. Bet with someone

Now, to act on my own advice


1. I set a goal of getting a visible abs by August 30th 2023
2. My plan is to
2.1 Continue doing 18:6 intermittent fasting daily and walk in a fasted state
2.2 Do resistive training with dumbbells at least 3 times a week
2.3 Eat low-carb food and avoid processed food as much as possible

Finally, thank you for your support since you are my peer pressure.

Take the first step and continue doing one more step each day

Why is that we don’t achieve the goals that we set to ourselves like losing weight, getting fit etc. Maybe, it’s because we never take the first step towards a goal in the first place. Then those of us who take that first step usually stop right after doing it. What is missing is the determination to continue to make small steps, day after day after day. As they say the road of 10,000 miles starts with the first step, but as I mentioned it’s more important to continue making step after step.

So, start small. Make a goal, say you want to lose weight. First, understand that most diets alone don’t work. Second, if you have no physical constraints start doing intermittent fasting going from long eating window to a short one. Then as you get used to fasting start incorporating walking into your fasting routine. Walking in a fasted state helps to lose more weight and also makes you feel good.

Write down your goal on a paper or digitally. Each day document the small step your took that day, summarize your progress. You can consider sharing your goal and your progress as you make it on social media which may help you to stick to your commitment due to peer pressure.

You can consider joining a support group or starting one yourself. Having other people engaged in the same activity, seeing their progress and how they overcome difficulties along the way could motivate you and provide you with a desire to persevere and move forward towards your goal.

In short, try to do something each day that moves you towards your goal just a little bit. Remember, that doing nothing is not going to help you in any way. But incremental steps in the end sum up to a long way you’ve made. The way that is taking you to where you want to be. Yes, it’s not easy. Yes, it takes will power. Yes, it’s uncomfortable at times and frustrating, but there is no other way.

Below comes a quote from Contact movie that summarizes it good

This is the way it’s been done for billions of years. Small moves, Ellie. Small moves.

‘Contac’, 1997

A user friendly introduction to math

For people who got scared of math in a school or college when it was taught in a such a way when no curiosity is fostered it is easy to dislike math. But if you still want to give math a try or even curious about mathematics then the How To Bake Pi book by Eugenia Cheng is maybe what you need.

This book is a gentle introduction to a wide audience of the Category Theory which is a part of pure mathematics. It does not require from a reader to be a math expert, but it does require at least a certain interest in math. Each chapter of the book starts with a recipe, usually related to pastries and then proceeds at looking how that recipe could be related to some aspect of mathematics in the first part of the book and to some aspect of Category Theory in the second part of the book.

What I particularly like about this Eugenia’s book is that it talks about sets, rings, groups and categories which are advanced concepts in math, but it is able to explain them in a friendly manner, by providing real world related examples and analogies. For example, she reminded a reader about how it’s possible to use a Pythagoras’s theorem to calculate a vertical and horizontal distances that a ‘real’ taxi cab travels in a city.

What I found most interesting to myself is her layered model of mathematical thinking that consists of three parts: knowledge, understanding and belief. Where understanding is in the middle and binds together knowledge and belief. Put in her own words:

We have knowledge, which is what the outside world sees, belief, which is what we feel inside ourselves, and understanding, which holds them together.

Cheng, Eugenia. How To Bake Pi. Profile Books, 2016: p. 272


What is interesting that Eugenia Cheng has written recently a new book on Category Theory which builds upon the foundations she laid in the How To Bake Pi book. The new book is The Joy Of Abstraction and it can be seen as a textbook for Category Theory presented in a user friendly manner that very much retains the spirit of How To Bake Pi.

Physical activity alone won’t help. Change what you eat first.

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The usual advice to eat less and move more is completely wrong and is against scientific evidence. I won’t go into detail here and you can read about it in the books by Jason Fung The Obesity Code or Gary Taubes Why We Get Fat.

What I do want to discuss is the fact that workout on its own won’t help you losing weight, since it contributes only a very small fraction of the energy that is burnt by the body when doing physical activity, especially, if you aren’t an athlete exercising twice a day every day.

If you are an average person who is not doing any sport usually and working mostly sitting in a chair then starting doing some exercise won’t make you slim. It won’t gonna happen. What you need to think of first is changing what you eat and when you eat it. Because this change can really be a drastic change in you life that can bring you weight down, help you loss excessive fat and feel better.

For example, if you exercise even three times a week, but still continue eating processed food full of any type of sugar, added or not, drinking soft drinks, diet or not, eating sweets, pastries etc., then no amount of exercise will ever help. You are doomed to stay overweight or obese. This is because eating these products raises Insulin hormone level which causes you body to store what you eat as fat. Then fructose which is a part of sugar or high fructose corn syrup, causes you liver to become fat, and raises Uric Acid which makes Insulin resistance even worse. So you get a double whammy here.

If instead you stopped eating sugar and starchy food in any form, then transition to eating meat, eggs, cheese and vegetables and some fruit. Do it during eating window of no more than 6 hours, then incorporating some physical exercise during you fasting hours can be a real boost to your weight loss.

So the bottom line is that you can’t outrun a bad diet. And this is true.

Intermittent Fasting is healthy. Sugar is not

It has been more than 9 months since I started to follow Intermittent Fasting regimen. I should say it was beneficial to me from lots of points of view. I lost about 31.5 pounds of weight (14.3 kg) going from 200 lb to 168.5 lb within this timeframe. I look slimmer and younger and overall I have a feeling of lightness and agility when I move.

I changed what I eat and moved away as much as I could from consuming processed food, though I do eat it a couple of times a week. I completely refrain from eating raw sugar or drinking soft drinks. I eat almost no sweets or pastries.

As for Intermittent Fasting I went from 16:8 which stands for 16 hours of fasting and 8 hours eating window to 18:6 that I do for months now. And I did 19:5 for a couple of months in a row. I also did prolonged fasts of 24, 39, 42 and 68 hours. I mostly did 42 hours fasts which I documented in this blog previously. I should say that prolonged fasts are nothing like 16:8 and they are more trickier to handle, but they result in faster and larger weight loss in comparison to classic 16:8 fast.

I also started to walk regularly throughout the week doing twice as much steps a day in comparison to pre-fast time. Over the weekends I actually do 3-4 times more steps than before I started fasting and do on average 10,000 steps or more. On weekends, I always walk in a fasted state in light clothes even in a very cold weather. In addition, initially I started doing weight training in a fasted state right after walking, but now I do it on evenings about three times a week using dumbbells and resistance bands.

What helped me to be motivated and keep on going were the books and YouTube videos that medical doctors, journalists and regular people produced on the subject of weight loss using Intermittent Fasting. These people were challenging wrong and widespread nutrional dogma of eating low fat and high carb food that caused worldwide epidemic of metabolic syndrome.

To name just a few, Gin Stephens, Jason Fung MD, Mark Mattson PhD, Robert Lustig MD, Benjamin Bikman PhD, David Perlmutter MD, Gary Taubes and others. Their books shed the light on why Intermittent Fasting worked and what were the dangers of sugar and especially fructose that was a part of it. All in all, I watched a couple of dozens of videos and read more than 15 books on the subject and a number of peer-reviewed scientific papers.

I also a member in a group of friends where we share advice on Intermittent Fasting and weight loss. My friends who followed me were able to loss 48 lb and 28 lb pounds each one respectively. I guess they are happy with the change they went through. And they are.

Well, despite all of this progress, sugar is still an addictive substance that I crave from time to time, especially after extensive workouts and other physical activity that accumulates during the day. Today, was such a day. On Saturday, I walked and ran in a fasted state for 3 km, than walked in a snow in the afternoon for about 3 km, and then had a workout with dumbbells in the evening. All in all it was quite exhausting. On Sunday, I woke up and went on walking and running in a fasted state this time for 6.2 km. Then in the afternoon I walked additional 3 km. As a result, in the evening at about 8 PM I had a craving for sugar and ate two slices of white bread with chocolate spread. All in all, about 16-20 gr of sugar (half of which is fructose).

So even though I know that sugar is unhealthy and outright dangerous, just like alcohol, tobacco and other drugs are having sugar a part of my diet for most of my life makes it quite difficult to eliminate it completely. Most of the time I am good without it, but sometimes cravings are there.

I hope, in time I’d be able to get rid of sugar and substitute it with berries or fruits rich in fiber. It isn’t an easy fight, fighting an uphill battle with sugar addiction that hundred millions if not billions of people face daily.

Mathematics Applied For Good

Photo by Reuben Teo on Unsplash

If you inclined towards mathematics, but almost didn’t touch it since college years and want to get a math rush again, then following are the books that you may find captivating.

I should mention that these are books on Applied Mathematics which is of useful kind paraphrasing Richard Feynman. The books are ordered from easy to not so.

To start:

1. Applied Mathematics: A Very Short Introduction by Alain Goriely. This book is a gentle intro to applied math and Alain is capable of explaining things lucidly and as simple as required, but not too much.

2. Street-Fighting Mathematics:

The Art of Educated Guessing and Opportunistic Problem Solving by Sanjoy Mahajan is more involved and requires some work on readers part, but it’s a delight to read. This book is available in open access here.

3. Next book from the same author is The Art of Insight in Science and Engineering: Mastering Complexity. It is somewhat similar to the former, but different. Again it’s open for public

4. Now, the last one is a real textbook on Applied Mathematics by J. David Logan, but nevertheless it is interesting to read and work through.

42 hours fast experience. To do or not to do?

Photo by Emre on Unsplash

It is 6th time that I am doing a prolonged fast (more then 24 hours). And it’s 4th time I am doing 42 hours fast. Below comes some observations.

  • It’s not getting any easier in comparison to previous fasts. First 26 hours are quite normal, but then the feeling of discomfort prevails. It’s not a hunger, but a feeling of an empty, glued and ‘vacuumed’ stomach.

  • The main difficulty is sleeping at night since I tend to wake up a number of times to drink and the dreams are quite annoying. Sometimes about food.

  • As for weight loss this time, it’s insignificant. But one possible explanation is that in the last 4 days I am doing about 120-150 pushups a day in addition to usual walking about 7000 steps. And yesterday while doing 42 hours fast I did 200 pushups throughout the day. So it seems like there is no weight loss. When actually, fat has lessened, but muscles have grown. Visually, I see less fat, than ever.

  • Will I continue to do extended fasts? Well, it seems like I won’t but I am for 24 hours fasts, since they are a piece of cake (oh no, carbs are even here 🙂 )

Start small

To be able to make a progress in anything there is a need to be able to set achievable goals. This is true also for weight loss. Setting grand goals that are hardly achievable can overwhelm you and even stop you from doing anything altogether.

That is why I suggest to set very small goals that you can reach with some effort. For example, instead of setting as a goal to be super muscular body builder, how about first starting to walk on a daily basis? Walking is free, easy to do and you do not need any special equipment for this.

Next, if you want to start with Intermittent Fasting don’t jump right into 48 hours fast, but start small with 12 hours eating window. Then decrease it gradually to 10, 8, 6, 4 hours.

If you want to include resistance training with rubber bands, dumbbells then start small by doing push ups in the morning or evening or both. Or maybe, start with one session a week at home, then two sessions a week etc. Gradual increase in a number of sessions is much easier than committing to a gym membership that costs you a lot of money.

So starting it small can take you quite far. As a teacher in a martial school used to tell us do it
Gradually, sequentially, continuously.

Chanukah Candles Mathematics

What is Hanukkah?

Hanukkah is a Jewish festival commemorating the recovery of Jerusalem and subsequent rededication of the Second Temple at the beginning of the Maccabean Revolt against the Seleucid Empire in the 2nd century BCE.

From Wikipedia

How Hanukkah candles are lit?

During Hanukkah festival it’s a custom to light candles on a special type of candelabrum that has eight plus one places for candles. Eight places to light a candle each day and one for an auxiliary candle (shammash in Hebrew) that is intended to light other candles.

During eight days of the holiday a candle is lit in such a way that on first day you light 1 candle, on second day 2 candles and on it goes until on the eighth day 8 candles are lit.

How many are there?

So then the natural question to ask is how many candles do I need to have to be able to light candles for eight days.

The math says sum them up,

(1 + 2 + 3 + 4 + 5 + 6 + 7 + 8) + 8 = …

And you get the number. Remember that additional 8 candles are there since we need to count the auxiliary candle used each day. Even though this calculation isn’t difficult to make, this may quickly change if you need to sum 1 to 100 candles.

What can you do? Is there a quick way to sum the candles? Indeed there is and if you recall your school math you could remember something about arithmetic progression. It gives you the formula below to count any number of candles or any other objects for that matter:

Sn = (a1 + an) * n / 2,

where Sn – sum of n elements, a1 – first element, an – last element, n – total number of elements.

For n elements the formula is

Sn = (1 + n) * n / 2

So in our particular case of Hanukkah it will be

S8 = (1 + 8) * 8 / 2 = 9 * 4 = 36 + 8 = 44 (again don’t forget auxiliary candles)

While this formula is correct one may wonder how do you derive it? What is the intuition? You always can resort to mathematical induction to prove why it works correctly. We leave it for you as an exercise (a free Book Of Proof by Richard Hammack could be helpful). But there is a visual way to understand how this formula was derived.

On the shoulders of giants

It is a folk legend that when one of the greatest mathematicians Carl Friedrich Gauss attended a school a teacher asked pupils to count numbers from 1 to 100 to calm them down. It says that Gauss came up very quickly with the answer 5050.

And the explanation is that he did this trick.

1, … 100 = 101

2, … 99 = 101

3, … 98 = 101

4, … 97 = 101

… …

97, … 4 = 101

98, … 3 = 101

99, … 2 = 101

100, … 1 = 101

He placed numbers form 1 to 100 in such a way that first sequence was ascending from 1 to 100, and the second was descending from 100 to 1. Then if you look at the sum of each pairs it makes 101. There are 100 such pairs, so when you multiply them you get

101 * 100 = 10100

But we counted each pair twice, so there is a need to divide this number by two.

101 * 100 / 2 = 5050

You may think at this point, well Gauss was a genius so he came up with this explanation, but it still feels like I do not get it fully. And I agree. It is still not fully clear how he came up with this trick. So let’s try to look at it more visually.

Visual aids to the rescue

If you look at candles that are lit on each day of Hanukkah from above we’ll see something like on the figure below.

You’ll see that this figure resembles a lot a right triangle. So it’s good to think about this in this way for a moment.

Now, you may recall that to get an area of a rectangular you multiply its two sides

Area = a * b

Well, rectangular is build out of two right triangles isn’t it? So if you look carefully at the figure below you’ll see what Gauss possibly thought.

You have 8 candles on one side of the rectangular. Then you have 9 candles on the other side of the rectangular. The area of this rectangular is

Area = 8 * 9 = 72,

but since we are only interested in half of the rectangular then let’s divide it by two.

72 / 2 = 36.

And don’t forget about adding 8 auxiliary candles.

So we get

36 + 8 = 44

Let there be light

That’s it folks. Let the light of the candles enlighten us in math.

Take care.