Why? First, intermittent fasting triggers a hormone called growth hormone. Growth hormone is the main hormone that spares muscle protein breakdown in your body. It protects it.
Cortisol, the stress hormone, and insulin both cause destruction of your muscles. So stress, eating sugar, having instant resistance, being a diabetic destroys your muscles. Forty hours of fasting did not trigger any breakdown of skeletal muscle. I did not find the study he was talking about but I found this one, SIX things I have Learnt from forty-hour Fasting https://annfoweraker.com/tag/40-hour-fasting/
Can the Keto Diet Decrease Your Fitness Performance? No.
Dr. Berg refers to studies that demonstrate the increase in performance for athletes. I was unable to find the link to the studies he referred to.
In this video Dr. Mercola interviews Dr. D’Agostino who tells us how the Ketogenic diet increased the performance of navy deep sea divers. Here is the link, Dr. Mercola and Dr. D’Agostino on Ketogenic Diet https://www.youtube.com/watch?v=5LDc5TxOcvA
When you run your body on ketones, you get less oxidative stress, meaning that your organs and tissues don’t break down as easily.
Two of the top ultra marathon runners are on keto. One of them, Zach Bitter, took the US record for a 100-mile event, done in 11 hours and 40 minutes.
It depends on the amount you are consuming, and the frequency.
It is unlikely you will gain weight on vegetables. You might think “potato”; of course, you will gain weight on potatoes, especially if you cook them and release their sugar, which will cause a problem with your blood sugars.
The first thing that will happen is you are going to lose your appetite for sugar when you completely stop taking sugar for two weeks. Why? Because every time there is sugar consumption, a hormone activates and pushes your blood sugar down, causing a low blood sugar situation (hypoglycemia to some degree). This causes you to crave sugar, but by getting rid of sugar from your diet, you get rid of the sugar cravings, too.
Hypoglycemia Definition: A condition caused by very low levels of blood glucose or sugar, which is common in diabetic people.