Question

Give reason : we feel exhausted after exercising

Answer 1

Answer:

because we use our energry in doing excersice so our glucose level decrease

Answer 2

During strenuous exercise, our muscles tire as they run out of fuel and build up waste products. Muscle performance can also be affected by a phenomenon called “central fatigue,” in which an imbalance in the body's chemical messengers prevents the central nervous system from directing muscle movements effectively......

 hope it helps you...