Meditation will benefit you as a whole person. It promotes physical relaxation and calm. A relaxed state is good for your heart and blood pressure, and your new awareness of breathing and posture will bring increased energy.
In meditation, your brain waves are in a different state from those of either waking or sleeping, and both sides of your brain are active.
Meditation unites mind and body. You can find peace of mind by learning to detach yourself from troubling thoughts. Your powers of concentration will sharpen with practice, too.