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Tuesday, December 3, 2024

This feature in Garmin watches shows how much energy you actually have and what affects your fatigue

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Imagine your body is like smartphonesometimes on a full charge, and other times it barely lasts on the last percentage of the battery. This is how the Body Battery in Garmin watches works, showing your energy level on a scale from 0 to 100. But does it really work?

How does Garmin know how much power you have?

Your watch doesn't guess – analyzes specific data from your body. The key is heart rate variability (HRV), i.e. how the interval between heartbeats changes. In addition, there is information about sleep quality and stress level.

The watch has noticed that you are stressed work? Minus points. Intensive training? A lot of energy loss. Even seemingly innocent situations, such as loud music or strong coffee, can affect Body Battery readings. Interestingly, positive emotions, such as excitement before an important event noticed by Garmin, can drain your “battery” faster.

Charging the battery – how to regain energy

Sleep is your best charger. A good quality night's rest can charge the Body Battery almost completely. A short nap during the day can also help. But remember that you won't cheat the system – eating an energy bar will not increase the indicator, although you may feel better temporarily.

Practical application – when is it worth considering?

Body Battery can be a great advisor in planning your day. Here are the most important situations:

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  • Training planning – high energy levels are the best time for intense exercise
  • Stress management – a low level is a signal that it's time to slow down
  • Regeneration control – helps you determine whether you have had enough rest
  • Optimizing your day – suggests when it is best to plan demanding tasks

Physiological correlations and dependencies

It's important to understand that Body Battery is not an isolated indicator. It is based on complex relationships between the autonomic nervous system and our performance. When heart rate variability (HRV) decreases, it usually indicates the dominance of the sympathetic nervous system, responsible for the fight-or-flight response. This naturally translates into faster energy depletion.

The interesting thing is that the algorithm also takes into account the individual user profile – the same activities may have different effects on the Body Battery in different people, depending on their performance and regeneration patterns. The correlation between the nighttime increase in HRV and the morning Body Battery reading is particularly important – this is when the parasympathetic system (“rest and digest”) is most active.

Is it worth trusting Body Battery?

Remember that Body Battery is just a guide. You don't have to give up training just because the indicator shows a low level. Treat this as additional information that will help you better understand your body. Over time, you will learn to interpret this data in the context of your well-being.



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