dr. vijay vad who is a renowned sports medicine specialist at the hospital for special surgery in new york city said that preliminary evidence shows that doing t'ai chi once a week can increase balance and reduce the risk of falls and hip fractures among seniors by up to half. this bears repeating. the greatest beauty of t'ai chi is that all the things you need for that kind of balance, freedom, flow, power is already in you. you already have everything you need. there's so much i want to share with you, right in this exploration of t'ai chi in the rest of this program. the next thing that we're going to talk about is how to actually get in touch a real physical sensation of that energy we've been talking about in an exercise i call touching the chi, touching the chi. so we're going to come back and do that in just a minute. lyn: hello, i'm lyn may. thank you for joining us for t'ai chi, health and happiness with david-dorian ross. david-dorian is here in the studio with me, and right now we're going to take a short break to talk with him about t'ai chi balance and about this pbs station.