Liam Neeson, his hair standing straight up like tensed wire, is the dauntless but neurotic sex researcher Alfred C.

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There she was in her red jacket hiding her face with her bouncy hair as the competition got tensed.

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The president sat with his body tensed, one hand gripping the side of his chair, the other clutching his chin, like a stoic enduring punishment.

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"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.

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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.

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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.

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Our HAL was energized as soon as we tensed our arm muscles, so lifting up the tray of four 1.5kg water bottles was a piece of cake consistently throughout the demo -- we even managed it with just our pinky (see video above)!

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His body tensed for impact.

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