But sleep apnea doesn't wake you up enough to get out of bed and start eating like pulling all-nighters or insomnia do and going to sleep with a full belly won't prevent flesh/muscle collapsing that causes sleep apnea although I can see how the body burning energy to digest + endorphin from a good meal might help falling asleep faster.

> IF, paired with lots of exercise, was working for me before the current crisis.

You mean the pandemic/lockdown ?