What would be an appropriate amount of time to hold a static stretch? A. 5 seconds
B. 20 seconds
C. 1 minute
D. 5 minutes

Which statement is true about common childhood infectious disease? a. children should always be given antibiotics to treat an infectious illness. b. frequency of infectious illnesses usually increases as children grow older. c. having a minor infectious illness weakens a child's immune system. d. infectious illnesses are usually mild and require no medication.

Which hormone controls the production of sperm

Which of the follow is good way to gauge musculature endurance?