But some of the early data suggest this approach may yield only small improvements in cardiac function.

WSJ: Nanotechnology Holds Promise for Heart Patients

The initial group of 1, 000 will participate in a series of baseline studies including cardiac function, testing for joint abnormalities and psychosocial tests.

CNN: STORY HIGHLIGHTS

They found that the stem cells produced growth factors that traveled to the heart, in addition to stimulating the muscle itself to make growth factors that also improved cardiac function.

CNN: Stem cells may offer promise for damaged hearts

Engaging in new behaviors to enhance our health like regular exercise will lead to improved muscle tone, cardiac function, stronger bones, better respiratory function, more balanced emotions and calmer nerves, greater mental clarity and a better night's sleep.

CNN: Manage your brain -- it's your most important asset