Well, hockey is a really exciting sport.

嗯，冰球是项非常刺激的运动。

A brain-stimulating balancing exercise is to stand on one leg for 30 seconds with your eyes closed.

项刺激大脑的平衡运动是闭着眼睛单腿站立 30 秒。

It’s been proven that doing a few easy exercises in the morning stimulates your brain and endorphins start rushing in.

事实证明，早做些简单的运动可以刺激你的大脑，内啡肽开始涌入。

Lifting your foot when you step on a tack is an innate, or intrinsic, reflex action — a super fast motor response to a startling stimulus.

当你钉时抬起脚是种先天的或内的反射动作，是对吓人刺激的超快运动反应。

To be honest, intense aerobics should be dependent on how old people are and some people who have heart diseases are not appropriate for the exciting activity.

老实说，剧烈的有氧运动要看年龄大小，有些有心脏病的人不适合做刺激的运动。