I should assume it warming up. You warm up before you play any sport right? Playing sports is exercising.
Hope this helps you!!
Answer: Have a balanced diet
Explanation:
diet
Answer: Refractory period of the cardiac action potential
Explanation:
Unlike the skeletal muscle which can be reactivated before it reaches a contraction, cardiac muscle must wait before it is almost completely relaxed to be activated again (because of its long refractory period), so one cannot make an increase in strength of contraction with a high frequency of stimulations.
Answer:
To escape from dangers grasp?
Explanation:
Answer:
1. Neck and Shoulder
2.arms and the back
3.A comfortable place to work
4.The study of people's efficiency in their working environment
5.A poor posture, Vibration, using too much force, frequent lifting
