6 Proven Steps to Goal Setting.
You must have a specific goal.
You must have a specific time in which to achieve your goal.
Write down your goal.
Must develop a plan to achieve your goal.
Must decide the price you're willing to pay.
Must thinks about your goal a every day.
The answer is C) The law of reversibility. This states that lack of exercise may have an adverse affect of exercise, which means you get weaker when you don't exercise. This is the main reason why people have to go through so much physical therapy after an injury.
Answer: 13 to 19 years old