When you use your muscles beyond what they can handle, either through aerobic exercise or weight bearing exercise, it causes your body to build new muscle tissue.
当你用你的肌肉做些有难度的活动时，不论是有氧运动还是负重运动，都会让你的身体建立新的肌肉组织。
When you're using the proper weight or amount of resistance, you can build and tone muscle just as efficiently with a single set of 12 repetitions as you can with more sets of the same exercise.
只要进行正确适量的力量或耐力练习，只做一组12次联系(而不是更多组同样的练习)就可以帮你塑造肌肉并保持健美。
When you do one month of regular exercise, your body ditches those excess fats and gains muscle.
当你做一个月的定期运动之后，你的身体会清除那些多余的脂肪，让你身体的肌肉增多。
When you exercise a muscle, it gets bigger. You should only be doing sit-ups if you want a bigger stomach.
当你运动你的肌肉，肌肉就变大。如果你想要大肚球才应该做仰卧起坐。
Try this exercise when you first get up in the morning to relieve muscle stiffness and clear clogged breathing passages.
当你早晨一起来的时候进行这个练习，放松肌肉僵持，清理阻碍的呼吸道。然后，在一整天用它来缓解背部紧张度。
Try this exercise when you first get up in the morning to relieve muscle stiffness and clear clogged breathing passages.
当你早晨一起来的时候进行这个练习，放松肌肉僵持，清理阻碍的呼吸道。然后，在一整天用它来缓解背部紧张度。
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