Dealing with a food coma

So if i hear right, a food coma is caused by "too much" insulin release post-eating? am i correct? if not, please correct me.

also, how would one deal with food comas? i have heard that 16:8 fasting works because then we are only getting 1 or 2 insulin releases during the 8 hr feeding window. is this correct?

what are some legit ways of getting over the "food coma" quicker?

are food comas healthy/useful?