Other possibly contributory lifestyle factors include alcohol consumption, stress, diet, exercise, disease, and medication. In summary, the genetic influences on aging may be highly overrated, with lifestyle choices exerting far more important effects on physical aging.
I think it's D. all of the above
No, it's because we need to breathe. Your body needs oxygen. Air pressure has little to nothing to do with it as far as I know.
<span>When you start a fitness program you are more motivated, you want to achieve your goals.Sometime achieving your goals may take time and this may affect your motivation, as you don't see the results as fast as you want. you lose your motivation and become more exhausted that's why it's easier to start fitness program than to maintain it. </span>
