Most people think exercise works because it burns calories.That’s true — but it’s only the surface. Deep inside your cells, every workout flips a series of molecular switches that decide how your body uses, stores, and repairs energy.Dr. Robert Lustig, in his
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🧬What Science Says About Ancient Movement Most people believe our ancestors were constantly moving and burned thousands of calories each day. However, evolutionary biologist Daniel Lieberman, author of Exercised: The Science of Physical Activity, Rest, and Health, found a different story. Using
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