A muscle is designed to be both strong and flexible. It has to support a lot of weight, even if the task is simply moving the bones in your body. At the same time, muscles work best when they have a full range of motion. So, muscles can be strengthened and stretched to maximize their power, but what happens if a muscle is stretched too far? You can tear the muscle fibers, which damages the muscle’s elasticity and reduces its strength. A severely damaged muscle can atrophy, wither, and die. Now consider your young, impressionable students. They’re like muscles: able to grow if pushed, but fragile enough to be permanently
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