A good posture is one that places the least amount of stress on your muscles and joints.
Answer:
Explanation:
When we curl a weight like in the picture below the muscle changes its size. This is called an isotonic movement. When the bicep is flexed and the weight moves upwards towards our shoulder the muscle is pulling from the insertion and into the origin of the muscle. The belly of the bicep becomes small, round, and hard.
Answer:
The curl-up tests the strength and endurance of the abdominal muscles, while the arm hang tests the strength and endurance of the arm muscles. Since different muscle groups are developed and tested in different ways, tests for different groups cannot be used interchangeably because the results do not pertain to the same group of muscles.
Explanation:
Exact answer from edgenuity. I took the test.
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