why do i get tired when im sad?!

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hey, that happens to me as well! when you become stressed, sad or depressed your body goes into hibernation mode and wants to cut of from the world and sleep! this is what my psychologist told me, i hope you feel better soon

your blood sugars gone down, you need some water and well some candy to feel better,
and well rest more so you will be better, and well crying takes alot out of you,
and well try well medidatation to feel better. deep breaths count slowly 10-1 to feel better
you heal yourself with deep breaths alot.. slowly

when you go through some emotional time, it can really drain the energy out of you.

It can be a symptom of depression.

I feel sleepy after I a cry for a while