Answer:
the last one, Underwater weighing
The glands of the endocrine system secrete hormones into the bloodstream to maintain homeostasis and regulate metabolism.
Answer:
C
Explanation:
Unrealistic means not realistic, or that it probably won't happen. If you set unrealistic goals, you will get discouraged and stop doing it because you probably won't be able to.
His muscles are getting stronger and have to break down to do so and that process hurts.
