two things that abody can do at the same time?

Answer 1

Your body does numerous things at the same time. you are constantly processing simultaneous imputs from all your sences, plus you have countles functions that happen within your body without you thinking about them, like heartbeat, breathing, digestion, etc.

Answer 2

A living human body which is also dying a bit at every moment of passage of time.

Answer 3

pee and poop for one set.

walk and chew gum

sneeze and fart.