Answer:
True ( in my option)
Explanation:
I took gym for 6 years of my school life and what I learn from those classes was to keep your back straight when you do any excrice because that would keep your back straight when your not doing excrice. I hope you like my answer.
Don't know if you typed this too fast spelt something wrong, so I'm not sure, sorry.
Protein helps build muscle and provide energy
Answer:
he could injure or pull a muscle