Answer:
Foods such as steak, fish, lean chicken, whey protein. Make sure to eat carbs with them, steak may not assist muscle building but it can help protein intake.
Explanation:
Lean Chicken and Lean fish/meats are mostly protein, the leaner they are the more protein. Chicken is the best for gaining muscle, combining with carbs is good, such as brown rice, this is from experience.
Answer:
Most systems depend on the chemicals produced by it to run smoothly
Explanation
Your endocrine system includes your thyroid, which helps produce certain aiding hormones
I do not know for sure but i believe the answer is pulse
To hear heart rate............