Is the most common type of stretching. a. active b. ballistic c. passive d. static which principle of exercise is concerned with maintaining a challenging workout a. balance b. regularity c. progression d. overload

The correct answer to the first question stated above is letter D. Static.
Static stretching is considered the most common form of stretching found in general fitness. It is considered safe and effective for improving overall flexibility.
For the second question, the answer is letter  d. overload.
Overload  is concerned with maintaining a challenging workout.

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