D. habits and standards that shape how you live is your best answer
Lifestyle is the way you live your life, and the way you live your life is based off of your habits, standards, beliefs, decisions, etc.
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I believe the correct answer is B, because exercising takes self control and discipline <span />
Is there any reading? I have an idea, but I'm not sure if it's right..
The answer is A.) It causes muscle hypertrophy.