Humans have aproximately muscles and bones 1. 600 muscles

2. 1,000 muscles and bones

3. 100 muscles and 60 bones

4. it depends of the heigh and weight

Which of the following is not a common cause for exercise related injury? a. overeating b. being dehydrated c. being active in an unsafe enviroment d. not wearing the proper clothes or protective gear

What parts of the cardiovascular system are affected with atrial fibrillation?

Acne is caused by a. a strict diet b. eating at night c. hormones d. dry skin select the best answer from the choices provided. a b c d