Increase Overall Performance- a stronger lower half allows for more power and explosiveness in any sport or activity you chose to engage in, increased sense of balance by developing proprioception
Decrease risk of injury-joints, especially knees and hips, are regions commonly prone to injury so stronger muscles help to stabilize and support these areas preventing or deterring injuries to the bone, ligaments, and musculature surrounding these joints
Improve metabolism-the legs are comprised of significantly larger muscle groups so working your lower body results in a higher caloric burn, working legs increases your muscle mass which then boosts your metabolism overall