Pilates involves a series of controlled movements that target specific muscles to address muscle imbalance and realign your body. This helps your muscles and joints return to their optimum functional state to regain strength and flexibility. Gradually you will start to feel lighter and taller, use your muscles more effectively, and improve your range of movement.
While some people may choose Pilates for remedial exercise, others such as professional dancers, actors and athletes devote their time to Pilates training in order to enhance their physical performance.
This is what Pilates will do for you: Improve posture, strengthen and realign the spine, develop firmer,sleeker, more powerful muscles, loosen tight muscles, relieve tension and stress, reduce body aches and pains, acquire natural rhythm and coordination, tone and define the body by lengthening and strengthening the muscles simultaneously and prevent muscle and soft tissue injury.
If you want to start doing Pilates I recommend you follow this program: http://www.12weekpilates.com It's been voted as the best Pilates program ever made.