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Exercise, fasting, and cold exposure activate the same survival genes - David A. Sinclair
The core message here is that short-term, acute stressors don't break you down, they signal your body to build itself back up stronger. It's about hormesis: the dose makes the poison.
The more muscle you have the more calories Meaning Factcheck Usage

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The more muscle you have, the more calories your body burns at rest - Michael Matthews
This quote means that muscle tissue is metabolically active. It's not just inert weight. It's like having little calorie-burning engines running 24/7.

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Sleep recalibrates our immune system, fine-tunes our metabolism, and balances our emotions - Matthew Walker
This quote means that sleep isn't a passive state of shutting down. It's an incredibly active period of biological regulation and repair that is absolutely essential for our physical and mental health.