Fasting before exercise increases fat utilization and lowers the rate of muscle glycogen depletion. Since a 24-h fast also depletes liver glycogen, we were interested in blood glucose homeostasis during exercise after fasting. An experiment was conducted with human subjects to determine the effect of fasting on blood metabolite concentrations during exercise. Nine male subjects ran (70% maximum O2 consumption) two counterbalanced trials, once fed and once after a 23-h fast. Plasma glucose was elevated by exercise in the fasted trial but there was no difference between fed and fasted during exercise. Lactate was significantly higher (P less than 0.05) in fasted than fed throughout the exercise bout. Fat mobilization and utilization appeared to be greater in the fasted trial as evidenced by higher plasma concentrations of free fatty acids, glycerol, and beta-hydroxybutyrate as well as lower respiratory exchange ratio in the fasted trial during the first 30 min of exercise. These results demonstrate that in humans blood glucose concentration is maintained at normal levels during exercise after fasting despite the depletion of liver glycogen. Homeostasis is probably maintained as a result of increased gluconeogenesis and decreased utilization of glucose in the muscle as a result of lowered pyruvate dehydrogenase activity.

Seemingly paradoxical, metabolic rate is actually increased in short-term fasting. For some concrete numbers, studies have shown an increase of 3.6% - 10% after 36-48 hours (Mansell PI, et al, and Zauner C, et al). This makes sense from an evolutionary perspective. Epinephrine and norepinephrine (adrenaline/noradrenaline) sharpens the mind and makes us want to move around. Desirable traits that encouraged us to seek for food, or for the hunter to kill his prey, increasing survival. At some point, after several days of no eating, this benefit would confer no benefit to survival and probably would have done more harm than good; instead, an adaptation that favored conservation of energy turned out to be advantageous. Thus metabolic rate is increased in short-term fasting (up to 60 hours)
http://www.ncbi.nlm.nih.gov/pubmed/10837292
http://www.ncbi.nlm.nih.gov/pubmed/2405717

Short-term fasting has no effect on average cortisol levels and this is an area that has been extensively studied in the context of Ramadan fasting. Cortisol typically follows a diurnal variation, which means that its levels peak in the morning at around 8 a.m. and decline in the evenings. What changes during Ramadan is simply the cortisol rhythm, average levels across 24 hours remain unchanged.
http://www.ncbi.nlm.nih.gov/pubmed/15452402

However, more relevant and telling studies, which don't involve fluid restriction, show that strength and lower intensity endurance training is unaffected - even after 3.5 days of fasting.
http://www.ncbi.nlm.nih.gov/pubmed/3622486

а если вы идете куда-то днем или там ДР на работе? что делаете? это неочень удобно в плане социума...

Плюс если посмотреть на хищников то едят они так же - много еды за раз (мяса) - потом обычно сразу спать - и потом долго не едят.

Если верить автору книги Warriors Diet то древние греки и прочие "древние" питались примерно так же.

надо дождаться голода (не путать голод с другими индикаторами) и только потом покушать.

а где все читают про интервальное голодание? просто в поиске забить, да? или есть ресурс, но тут его не выкладывали, в эфире?

Пишу для информации- "супчик жизни"-по тв видела..японские женщины сидят на нём месяц

у нас в городе начали делать нутригенетику.

почитала...но я поняла так..это для тех кто ОЧЕНЬ МНОГО занимается спортом...