Why consistent exercise is Healthy

>> Monday, June 28, 2010


A new study that gauged the metabolic effects of exercise may significantly advance our understanding of what’s going on inside a body in motion. During the experiment, scientists actually saw how much being fit changes your ability to incinerate fat, moderate blood sugar and otherwise function well. They also uncovered proof, at once inspiring and cautionary, of just how complicated and pervasive exercise’s consequences are.

In the experiment, published late last month in Science Translational Medicine, researchers from Harvard University and other institutions relied on a mass spectrometer to enumerate specific molecules in the bloodstreams of people who’d been exercising. The molecules were metabolites, which drive or are the byproduct of metabolic changes in the body. Metabolism is, of course, the chemical process of keeping yourself alive. All of the biochemical processes that feed and nurture cells constitute your metabolism. What the researchers wanted to know is, how does your metabolism change during and after exercise?

These findings suggest that exercise has both “acute and cumulative” effects on your body’s ability to use and burn fat, says Gregory Lewis, a cardiologist at Massachusetts General Hospital in Boston and an author of the study. After only 10 minutes of exercise, even the least fit showed evidence that their bodies were burning fat; the more fit, the more metabolic evidence of fat burning.


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