Objective is to complete as many curl-ups as possible up to a maximum of 75 at a specified pace. ... When performing the curl up students need to get their backs up off the mat far enough so that their fingertips cross the measuring strip.
From ages 3-16 it is the most rapid, and gradually slows down.
I would say D because well you’re gonna spot areas to improve and be setting goals
Answer:
Oxygen doesnt leave our body
Explanation: