Answer: sorry if am wrong but I think its true!
Explanation: hope this helped :]
I mean, find what you want to work on when feeling mentally unstable. I guess just make a goal to what you want to achieve when doing this.
Answer: The four common traits of all muscles are Excitability or Irritability, contractibility, extensibility, and elasticity. Muscle tone refers to the ability of muscles to be slightly contracted at all times, even when not in use.
Explanation: