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Suunto 9
The last step defines your bedtime. Your watch uses that period to determine when you are
sleeping (during your bedtime) and reporting all sleep as one session. If you get up for a drink
of water during the night, for example, your watch still counts any sleep after that as the same
session.
NOTE: If you go to bed before your bedtime and also wake up after your bedtime, your
watch does not count that as a sleep session. You should set your bedtime according to the
earliest you may go to bed and the latest you may wake up.
Once you have enabled sleep tracking, you can also set your sleep target. A typical adult
needs between 7 and 9 hours of sleep per day, though your ideal amount of sleep may vary
from the norms.
Sleep trends
When you wake up, you are greeted with a summary of your sleep. The summary includes, for
example, the total duration of your sleep, as well as the estimated time you were awake
(moving around) and the time you were in deep sleep (no movement).
In addition to the sleep summary, you can follow your overall sleep trend with the sleep
insight. From the watch face, press the lower right button until you see the SLEEP display. The
first view shows your last sleep compared to your sleep target.
While in the sleep display, you can swipe left to see your average sleep over the last seven
days. Swipe up to see your actual sleeping hours for the last seven days.
While in the average sleep display you can swipe left to see a graph over your average HR
values for the last seven days.
Swipe up to see the actual HR values for the last seven days.
NOTE: From the SLEEP display, you can keep the middle button pressed to access
sleep tracking settings.
NOTE: All sleep measurements are based on movement only, so they are estimates that
may not reflect your actual sleep habits.
Sleep quality
In addition to duration, your watch can also assess sleep quality by following your heart rate
variability during sleep. The variation is an indication of how well your sleep is helping you
rest and recover. Sleep quality is shown on scale from 0 to 100 in the sleep summary, with 100
being the best quality.
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