This is a serious question i'm asking myself.

are black dots on skin cancerous? (it might be my birthmark)

only answer if you really know the answer.

It really depends on size and color . As you get older your skin starts to change colors sometimes. It’s possible to form marks like beauty marks.

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle

By placing 2 fingers at the sternum (the spot where the lower ribs meet) the put the heel of your other hand next to your fingers. hope this