Why is it important to know the major muscle groups in your body? Be specific and detailed as possible with your answer. ​

Knowing the major muscle groups and the weight lifting exercises that work each of these basic muscle groups is very important to improving your body. ... This is a great way to keep your body strong, powerful, mobile, flexible, and healthy.

Explanation:

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.