Ans Charge Details In The Flow App - Polar Electro IGNITE User Manual

ANS charge details in the Flow app

ANS charge gives you information on how well your autonomic
nervous system (ANS) calmed down during the night. The scale is
from -10 to +10. Around zero is your usual level. The ANS charge is
formed by measuring your heart rate, heart rate variability and
breathing rate during roughly the first four hours of sleep.
A normal heart rate value for adults can range between 40 and 100
bpm. It is common for your heart rate values to vary between nights.
Mental or physical stress, exercising late at night, illness, or alcohol can
keep your heart rate up during the early hours of your sleep. It's best
to compare your last night's value to your usual level.
Heart rate variability (HRV) refers to the variation between
successive heart beats. In general, high heart rate variability is linked
to general good health, high cardiovascular fitness and resilience to
stress. It can vary greatly from person to person, ranging from 20 to
150. It's best to compare your last night's value to your usual level.
Breathing rate shows your average breathing rate during roughly
the first four hours of sleep. It is calculated from your beat-to-beat
interval data. Your beat-to-beat intervals shorten when you breathe in
and lengthen when you breathe out. During sleep, breathing rate
slows down and varies mainly along with sleep stages. Typical values
for a healthy adult at rest range from 12 to 20 breaths per minute.
Higher values than usual may indicate a fever or impending illness.
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