Muscle System肌肉系统

Place · Level 3

肌肉不是只会收缩 · 它是代谢炉、内分泌器官、神经训练场

Contraction is signal

Stop 1/6

收缩是信号

Exercise isn't 'burning calories' — that's the shallow read. Every muscle contraction sends mechanical, electrical, and chemical signals simultaneously.

Calcium ions release from the sarcoplasmic reticulum, turnover spikes, senses energy stress, senses mechanical tension and amino acids, and the nervous system recalibrates motor output.

So exercise isn't depleting the body — it's giving the body a 'need to adapt' command.

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本站提供科普与一般性建议，不替代医师诊断或处方；有症状或正在服药请咨询合格医师。 Educational content, not medical advice — consult a clinician for diagnosis or treatment.

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