Explain how the stretches become easier each time that you perform them. how do these stretches affect your muscles during physical activities completed after stretching?

The stretches become easier each time it is performed. This can be noticed from the ways the muscles react after each round. With each round of stretching the muscles become warmer and gain greater range of motion. After the stretching activity, the muscles are always more than ready to go for action. One gains great muscle flexibility and resilience which allow one to perform better  during the physical activities that follows stretching.

"observation" would be the correct answer