Why does my brother sleep until 12pm and stays up till 12am

Sleep routine, he might have got used to it, just as you have got used to yours.

He probably needs 12 hours sleep to 'operate properly'

menstruation is a process in which blood and mucous flows out every month through the vagina. this process occurs every month because one egg is released from the ovary every month and at the same time, the uterus (womb) prepares itself to receive the fertilized egg.

explanation:

hope this

answer; the above statement is (true); (osha)