What steps do you take to prepare for a good night's sleep? Do you have any habits that might be keeping you from experiencina a good night's sleep?

(a) is not correct because one does not get increased cholesterol  from lifting weights.(b) is not correct because lifting weights cannot reduce the risk of a hereditary disease.(c) is not correct because back pain isn't a benefit! and plus, if he lifts weights properly, he should not have back pain.(d) is the correct answer because his ligaments will gain mass, making it easier for him to carry heavier weights and he will also be stronger!

Answerweight and height;

  separated twins develop traits that differ according to the environments in which they are raised.