The exercises are designed to stretch and tone your leg muscles.

这些活动目的在于伸展和增强你的腿部肌肉。

《牛津词典》

Consider the types of exercises you want to do, which would be based not only on your goal to lose weight and tone the body but also for what you like.

考虑你要进行的运动类型。这不但要根据减肥塑身目标，而且还要考虑自身运动喜好。

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CONCLUSION: Exercises can improve obviously heart rate variability in rest, increase tone of cardiac vagus nerve and decrease the capability of cardiac sudden death.

结论：运动训练可明显提高安静时心率变异性，提高心迷走神经张力，减低心脏性猝死的可能性。

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