People with heart failure may benefit from practicing tai chi, according to research supported in part by NCCAM and published in the journal Sleep Medicine. Because patients with chronic heart failure often experience insomnia and impaired breathing during sleep—which could further impair heart function and lead to potentially dangerous heart rhythm disturbances—improving sleep and sleep breathing is an important goal.
Source: http://nccam.nih.gov/research/results/spotlight/072508.htm?nav=rss