Answer:
TRUE When joints are not regularly moved, muscles shortens and flexibility decreases ... moving the joints beyond the accustomed range of motion ... (Muscle tissue has elastic properties & responds to stretching exercises by undergoing ...
Explanation:
you have to study
The strong muscle in your upper body that you are talking about is called the diaphragm
In this case, it will all came to the material of the target. The easiest one should be the one that is made by nylon target.
The hardest one to knock over would be made by materials such as silicone, which will basically provide strong deflection for the ball
hope this helps