>>1242446as a general rule, when deprived of fuel from food intake for a certain amount of time, your body will start to burn muscle tissue for fuel, but it will only burn about 5% of muscle mass before it automatically switches to burning excess body fats.
it will then continue to process and burn body fats until these fats are depleted.
this is an extreme form of fasting not usually recommended.
it is based upon body chemistry developed through thousands of years or evolution. in ancient days before modern society when we were hunter gatherers and nomads. it could be days between meals, so our bodies adapted to periods without food. of course this lifestyle promoted muscle growth, endurance, the ability to burn fat into fuel and peak efficiency in utilizing the intake of available nutrients at irregular intervals.
more to it than that, but it something along those lines
