Cutting fat may have more to do with staying active than restricting your calories, according to a review in Research Quarterly for Exercise and Sport
. Engaging in vigorous high-impact activity, such as running or playing an intense game of flag football
, researchers found, causes mechanical stimulation of stem cells, resulting in their development into lean tissue rather than fat. That is, because the body recognizes the need for more muscle and bone to support your strenuous activity level, it converts these fledgling tissues into exactly that. Bottom line: To get leaner, emphasize exercise over cutting calories.
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