Testosterone
Growth hormone
Insulin-like growth factor
Cortisol
Answer: To assist your circulatory system in pumping oxygen-rich blood to your working muscles.
Explanation:
1. Family
2. Friendships
3. Having a good time
4. A good movie
5. Husband/Wife
6. A good laugh
7. Religion
8. Something beautiful (Picture, mountain view, or weather.)
Answer:
Developing offspring
Produce reproductive cells