@93e0dc2f 
Idk, did you hear/read some depressing news? 
Do you need a nap? A snack? Some water? 
Conversely, did you eat something heavy or greasy recently? Or drink something unhealthy? Sugar crash?
Also could be hormonal fluctuations, or a change in barometric pressure. 
So many things can make us feel bad; why can’t there be more things that make us feel good? :catPOWER: