When your sleep cycle has a regular rhythm, you will feel better.
当你的睡眠周期固定下来之后你会觉得好多了。
Occasional arrhythmias are normal. Tachycardia is a fast regular rhythm; bradycardia is a slow rhythm.
偶然出现节律不规则是正常的，心搏过速是心率快而均匀，心搏过缓是心率慢而均匀。
Occasional arrhythmias are normal. Tachycardia is a fast regular rhythm; bradycardia is a slow rhythm.
偶然出现节律不规则是正常的，心搏过速是心率快而均匀，心搏过缓是心率慢而均匀。
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