Volleyball is considered a good aerobic exercise because you’re on your feet while playing, you’re working the same large muscle groups for more than 20-minute intervals and you have the opportunity to maintain 60 to 80 percent of your target heart rate.
The answer is b. strain
because tear and sprain is when you over do something involving that muscle and/or misuse it. and cramp is just something that happens and you cant really control.
30 minutes because it takes a longer amount of time for you to burn calories from your body
They might not no how to use the equipment
