Muscle-strengthening activities, involving major muscle groups, should be done on 2 or more days a week.
每周至少应有2天进行大肌群参与的增强肌肉力量的活动。
2
Also recommended: muscle-strengthening activities two or more days per week, which protects against a decline in bone mass, especially that experienced by post-menopausal women.
它还建议：每周进行两次及以上的肌肉增强运动，可以预防骨密度的降低，对更年期之后的女性来说尤其如此。
3
Each time we notice that we've left the breath, and we return to it, we're strengthening the muscle of living in the present and noticing, which helps us return to the present when we're biking.