What is the difference between muscular strength and muscular endurance? A.
Strength refers to mobility of joints, while endurance refers to muscular force.
B.
Strength refers to percentage of body fat, while endurance refers to sustaining activity over time.
C.
Strength refers to muscular force, while endurance refers to sustaining activity over time.
D.
Strength refers to the quality of physical performance, while endurance refers to mobility of joints.

Does the weight loss program have practical significance? a. no, the program is not practically significant because the results are likely to occur even if the weight loss program has no effect. b. yes, the program is practically significant because the results are too unlikely to occur by chance. c. yes, the program is practically significant because the amount of lost weight is large enough to be considered practically significant. d. no, the program is not practically significant because the amount of weight lost is trivial.

Which of these is a fact about performance enhancing drugs? a. steroids lack addictive properties. b. steroids use can cause dangerous side effects. c. it is safe to use steroids when working out. d. a person can get in legal trouble for using steroids.

1. controls how much sugar is in the blood pancreas 2. controls the other glands pituitary gland 3. manufactured by the brain to relieve pain thyroid 4. gland that regulates the body's energy levels endorphins