生理
せいり
☆ noun (common) (futsuumeishi)
☆ kind. adj-no
◆ physiology
食べてすぐ寝るのはいけないとよく言われるが、食べた後眠くなる生理と合わないじゃないかと思う。
I'm often told that sleeping right after eating is bad for me, but then Ithink, isn't it built into our physiology that we get sleepy after eating?
◆ menstruation, one's period, menses
Is your menstruation normal?