From the website of the Portland Tai Chi Academy, Oregon
Tai Chi's Special Benefits for Practitioners Over Fifty
1. Increase physical balance.
2. Regulates and lowers blood pressure.
3. Improves circulation.
4. Promotes and good night's sleep.
5. Re-establishes biomechanical alignments.
6. Restores sexual vitality.
"Tai Chi Health for Life: How and Why it Works for Health, Stress Relief and
Longevity." By Bruce Frantzis, Blue Snake Books, 2006.