REDUCE STRESS. This is probably the number one reason that I practice tai chi. The proven link to stress and the exacerabation of illness is motivation for me to continue with my own practice of tai ch. Another reason is BETTER BONE DENISTY. We are an aging population like it or not. Increasing bone density increases my chances of remaining active and healthy. Tai chi helps promote better balance, increases stamina and flexibility. And one of the best reasons to practice tai chi is that it does not take a lot of time. You can do a full set, all 108 moves in about 15 minutes.