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Serene™ guided breathing exercise
Serene™ is a guided deep breathing exercise that helps you relax your body and mind and manage stress. Serene guides
you to breathe at a slow, regular rhythm – six breaths per minute, which is the optimal breathing rate for stress-relieving
effects. When you breathe slowly, your heart beat starts to synchronize with the rhythm of your breathing and your heart’s
beat-to-beat intervals start to vary more.
During the breathing exercise your watch helps you maintain a regular slow breathing rhythm with an animation on the
watch display and by vibrating. Serene measures your body’s response to the exercise and gives you real-time biofeedback
on how you're doing. After the exercise, you get a summary of the time you spent on the three serenity zones. The higher
the zone, the better the synchronization with the optimal rhythm was. The more time you spend in the higher zones, the
more benefits you can expect to feel in the long-term. When you use the Serene breathing exercise regularly, it can help
you manage stress, improve the quality of your sleep and give you a sense of improved overall well-being.
Serene breathing exercise on your watch
The Serene breathing exercise guides you to breathe deeply and slowly to calm down the body and mind. When you
breathe slowly, your heart beat starts to synchronize with the rhythm of your breathing. Your heart's beat-to-beat
intervals vary more when your breathing is deeper and slower. Deep breathing produces measurable responses in the
heart’s beat-to-beat intervals. When you breath in, intervals between consecutive heart beats shorten (heart rate speeds
up) and when you breath out, intervals between consecutive heart beats lengthen (heart rate slows down). The variance
of your heart's beat-to-beat intervals is greatest when you are closest to the 6 breathing cycles per minute rhythm
(inhale + exhale = 10 seconds). This is the optimal rate for stress-relieving effects. This is why your success is measured
not only from the synchronization, but also from how close you were to the optimal breathing rate.
The default duration of Serene breathing exercise is 3 minutes. You can adjust the duration of the breathing exercise in
range between 2-20 minutes. You can also adjust inhale and exhale durations if needed. Fastest breathing frequency can
be 3 seconds for inhale and 3 seconds for exhale resulting 10 breaths per minute. Slowest breathing frequency is 5
seconds for inhale and 7 seconds for exhale resulting 5 breaths per minute.
Check that your position allows you to keep your arms relaxed and your hands still throughout the entire breathing
exercise. This allows you to relax properly and ensures that your Polar watch can accurately measure the effects of the
session.
1. Wear your watch snugly just behind the wrist bone.
2. Sit or lie down comfortably.
3. On your watch, choose Serene and then choose Start to start breathing exercise. Exercise starts with a 15
seconds preparatory phase.
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