They found that clenching on a mouthpiece that aligns their bite increased hand grip force, back row force, and even how high they could jump.

研究发现，咬紧咬合对齐的牙套会增加手握力、后排力，甚至可以提高弹跳力。

If Henry's voice on the phone was a tether, his body is the gravity that makes it possible, his hand gripping the back of Alex's neck a magnetic force, a permanent compass north.

如果亨利在电话里的声音是一条绳索，那么他的身体就是使这一切成为可能的重力，他握住亚历克斯后颈的手是一种磁力，一个永久的北向指南针。