Hundred of studies on the health benefits of Tai Chi, Qi Gong, and Mind-Body methods come out every year. The writing is on the wall and it is now well documented that these arts have a positive effect on bone development, cardiovascular health, anxiety, depression, arthritis, and much more.
Just 10-20 minutes a day can lead to profound effects in a few short weeks.
Check out this article that just came out on the subject:
Start some form of practice today! Of course, you can never go wrong with a solid meditation practice either!