As you inhale, your heart rate slightly increases, and as you exhale, it slightly decreases. This phenomenon is known as respiratory sinus arrhythmia (RSA).
Garmin watches measure respiration rate, which is the number of breaths you take per minute, using the optical heart rate sensor. The watch analyzes heart rate variability (HRV) to determine breathing patterns. Essentially, it detects subtle changes in your heart rate that correspond to inhaling and exhaling.
成年人，休息状态的呼吸每分钟大约12-20次。特别是看电影，睡觉时，最低呼吸就是12次。
我发现我低于这个最低频率，平均大概10次。还时不时弄个9，甚至8。
经常运动的，尤其耐力好的，肯定是要低一些的。不然就是Bradypnea，呼吸过缓。那可能是有病变了。
可是，每分钟8次呼吸是不是也太慢了些。不是越慢越好吧。你们最低到多少呢？
前年我的医生就煞有介事地在我的体检报告上写上了Bradycardia, 心率过缓。现在又来Bradypnea.
运动员的肺活量大，每次呼吸的摄氧量会高，心肺功能强，所以对于休息状态，低于12次供氧就够用了。而且对肌肉的供氧也更有效率。心动过缓和呼吸过缓是相辅相成的。但我不喜欢这个“过”字。
所以，虽然知道低一点没问题，但也要有个度。似乎目前最慢是8次，别再低了。
As you inhale, your heart rate slightly increases, and as you exhale, it slightly decreases. This phenomenon is known as respiratory sinus arrhythmia (RSA).
Garmin watches measure respiration rate, which is the number of breaths you take per minute, using the optical heart rate sensor. The watch analyzes heart rate variability (HRV) to determine breathing patterns. Essentially, it detects subtle changes in your heart rate that correspond to inhaling and exhaling.
HRV低，呼吸频率就高一点。
我感觉8还可以，再低可能就要查查了。8的话是每7到8秒呼吸一次，感觉还行。