Yet another great way of relaxing is an exercise where you tense each muscle in your body, one body part at a time, and then let the tensed muscle relax.

另一个很妙的放松方法就是锻炼。锻炼能拉紧你的每块肌肉，每次锻炼身体的一部分，然后让紧绷的肌肉放松。

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Fear: eyebrows raised and pulled together; raised upper eyelids; tensed lower eyelids; lips tightly stretched horizontally back to the ears.

恐惧：眉毛挑起并往眉心靠拢，上眼睑抬高，下眼睑绷紧；嘴唇朝耳朵方向扁平拉扯。

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Karen tensed and held her breath as she leaned nearer the open window.

凯伦紧张得屏住了呼吸，身子轻轻地斜靠近打开的窗户。

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But the difference is that the first player saw that he was about to be hit and tensed his neck, which limited the sharp back-and-forth jolt of the head that sends the brain crashing against the sides of the skull.

NEWYORKER: Offensive Play

There would, however, be an immediate shift in momentum as Berdych tensed up in game two of the second set and allowed Federer to break to 15 with a fine crosscourt forehand pass.

BBC: Wimbledon 2010: Roger Federer stunned by Tomas Berdych

"We knew we hadn't played very well for 40 minutes, and we just tried to generate some energy because we were all tensed up, " Carlyle said.

WSJ: Reimer SO sends Devils to 10th straight loss