Their body is more susceptible to illness<span />
Answer:
muscle imbalance
Explanation:
If this was actually a true statement (whch it is not because football players are very well balanced), the focus on one or two muscle groups willl neglecting others will cause a muscle imbalance.
Flexibility has to do with stretching.
Overdominance occurs when a heterozygote has a more phenotype than that of either of its parents.
I believe that you shouldn't use l<span>ow intensity (light weights) if you want to build muscle mass.
</span>These types of weights won't help you much define the muscles you want to have, as opposed to free weights, weight machines, and high intensity (heavy weights) which definitely will. So if your goal is to build muscle mass, avoid light weights.