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The Best Fitness Book From Every Decade (1900-2026)

Your abs are expiratory muscles, not just crunch muscles. A weak exhale locks your diaphragm down and keeps you stuck in shallow breathing. Your exhale isn't passive. It is an active muscular contraction driven by your obliques and transversus abdominis. ㅤ When those muscles are weak, the diaphragm never fully resets between breaths. You get stuck in a shallow chest-breathing loop where every inhale starts from a half-empty position. ㅤ Train the exhale: 1. Weighted Sit-Up, exhale hard at the top

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