Intermittent fasting is a specific type(s) of fasting, one of which is where you don't eat for 16 hours, then can for the next 8 and repeat. In general, most definitions of fast consider anything intentional above 12 hours a fast. Per WebMD "A fast usually lasts from 12 to 24 hours, but some types continue for days at a time."
Ummmm... most people eat breakfast. You know... break your fast.
I don't think you read what I wrote...
Semantics? Really?
My understanding is while fasting our body in order to maintain an energy level will deplete glucose first, then move on to fat, and finely after a prolong fast will feed off of muscle..... I know this is simplified, any thoughts?
My mama told me that if you don't know what a word means, you shouldn't use it. Your definition of "fast", in case it's not glaringly obvious, is wrong.
You go ahead and feel free to believe what you want. It seems very important to you.
That's not healthy.
How long it takes depends on the markers you're looking at, how much glycogen you've got stored in your liver, and how active you are during the fasted period. 12 hours can be enough to enter a fasted state and 24 may too short, depending on the individual.
Why not?
There are actually a lot of risks associated with not consuming food, and it doesn't have to be weeks.
There are a few other assumptions to factor in. Your body is designed to take in food daily, and I'm not a big fan of "body hacking", or other extreme diets and fads.
www.sciencedirect.com
www.sciencedirect.com
www.sciencedirect.com
I'm all for calorie restriction, sure.Can we live longer by eating less? A review of caloric restriction and longevity
Caloric restriction, decreasing caloric intake by 20–30%, was first shown to extend life in rats nearly 80 years ago. Since that time, limiting food i…
Toward a unified theory of caloric restriction and longevity regulation
The diet known as calorie restriction (CR) is the most reproducible way to extend the lifespan of mammals. Many of the early hypotheses to explain thi…
What are the roles of calorie restriction and diet quality in promoting healthy longevity?
Epidemiological and experimental data indicate that diet plays a central role in the pathogenesis of many age-associated chronic diseases, and in the …
) that create heat and hot water by burning any old junk thrown into it…old chair legs, table tops etc. We’ve evolved to process anything we can get our hands on. Yes, ‘refined petrol’ is easier to deal with, but we can process any old ****!
So a day or two is ok for most people, and water is life.I’m a physiologist and was a medical doctor.
You have to think about the diet of our ancestors roaming the plains of Africa. They ate the occasional berry, starchy root maybe a grub or two for most of the time…very low calories and poor nutrition. They may’ve caught a bison (after days of stalking with jogging running and walking), and gorge on protein for several days, feasting like Roman senators at an orgy and then, it’s back to relative famine for weeks perhaps months on-end. Muggles think our body’s digestive systems and requirements are like a finely tuned F1 racing car engine and that require high quality ‘fuel’. This is false. We’re more like the furnace boilers you find in old New York apartment blocks (I’m getting this from ‘Rhoda’ and ‘Friends’
For an average American, occasionally fasting (<600kcal/24hrs) for 24-48 hrs (perhaps longer) will do no harm (unless they are on oral or injected hypoglycaemic agents) and they are well hydrated throughout the fasting period. If it feels bad, then eat. If you feel hungry, that’s normal.
