So, your looking to have that perfect body – We all strive for this. But most of us start going about it all wrong. We will spend only enough time doing aerobic exercises to warm up, and then proceed to our “real workout,” lifting heavy weights. There are so many things that are wrong with this approach that it is hard to get into them all. Essentially, there is nothing more important than aerobic exercises for body health.

Although heavy lifting can make your muscles bigger, if it is done by itself, they will not get the strength and tone offered by endurance lifting or regular exercise. Additionally, because lifting alone without regular aerobic exercise will actually hurt body flexibility, this approach is quite likely to result in physical harm. The bottom line is that, if you really want to look good, use aerobic exercises primarily, and only once you have a good program of those, should you do lifting.

Link