What are some good, fairly easy workouts I can do (like the sevens workout)?

Witch system has the main function of the body defense

What are hormones? a. they are minerals needed for proper bone formation. b. they are the parts of the body targeted by endocrine glands. c. they are substances needed for muscle and nerve activity. d. they are substances released by endocrine glands.

The process by which the diameter of the bone increases is called? a-metaphysic b-appositional growth c-diaphysics d-epiphysis