They claim that by stretching, muscle fibers are lengthened and destabilized, making them less prepared for the strain of exercise.

他们声称通过伸展，肌肉纤维会被拉伸，原有的平衡被打破，使得它们来不及应对接下来紧张的锻炼。

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The study also shows treadmill exercise may be better than stretching, the traditional exercise prescribed after a stroke, both for walking and overall fitness.

该研究还表明跑步机运动可能比传统的、用于中风后恢复的伸展运动更好。跑步机练习对行走能力和整体适应力都有更好的效果。

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Resistance exercise may improve bone strength and decrease risk for osteoporosis, and stretching exercise may improve range of motion in cancer survivors with lymphedema.

抵抗力锻炼可能改善骨质密度和降低骨质疏松症的风险，并且扩大锻炼可以增加伴有淋巴水肿的癌症存活者的活动的范围。

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Working out in the afternoon also requires a little less time stretching on the mat because your heart and muscles are more prepared for the stress of exercise than when you're fresh out of bed, Bryant says.

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