There are many different systems involved in when we exercise, the three main ones are the Respiratory system which is involved in breathing the circulatory system which is about circulation of blood around the body and finally the muscular system and finally the Muscular system which is about how we move.
Explanation:
edg2021
11 days . This is including proper diet and water.
The color of sky is blue due to the molecules in the air dissipate blue light from the sun more than they dissipate red light.
Lactic acid build-up was the cause of muscle fatigue.