4. Avoiding Injuries

Warm Up Step by step, slow walking warms you up for faster walking. The physical stress of exercise—and sometimes even just the anticipation of it—prompts the brain to cue your adrenal gland to secrete the hormone adrenaline, a.k.a. epinephrine. Traveling through the bloodstream, this short-term stimulant signals your heart to beat faster and to pump […]


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