Open the health App, turn on the sleep respiratory rate monitoring function, and monitor the respiratory rate. Watchos8 measures the breathing rate, that is, the number of breaths per minute during the user's sleep, and displays the daily situation with the maximum and minimum values. If the user's breathing frequency is abnormal, Apple Watch will remind you. In the health App, users can see more accurate breathing data.
By default, health apps for Iphone are divided into 12 categories, namely: breathing, fitness records, menstrual tracking, other data, physical examination, sleep status, hearing, heart, nutrition intake, mindfulness training, main signs and clinical documents.