May 05, 2025
Wearable technology now provides daily scores such as "readiness" or "body battery," which indicate your level of readiness to manage mental or physical responsibilities.
Source: Canva
These ratings combine activity, sleep, and heart rate into a single figure and provide straightforward guidance like "rest" or "push harder."
Source: Canva
A wide but not ideal dataset of physiological signals, including temperature, sleep quality, and heart rate variability, is used to calculate scores.
Source: Canva
Minor mistakes in motion tracking or heart rate might skew the final score and give an inaccurate picture of your body's true state.
Source: Canva
It is difficult to trust how ratings are determined because most businesses don't disclose how raw data is weighted or altered.
Source: Canva
Some ratings overstate your level of stress or weariness by penalizing you twice for related signals, such as poor sleep and low HRV.
Source: Canva
Some trackers still lower your score because you were active the day before, even after your body has fully recovered.
Source: Canva
It might be challenging to compare results since different devices have varying definitions of "baseline" data. Some use seven days, while others use twenty-eight.
Source: Canva
Fitness trackers are helpful for identifying patterns, but they shouldn't be used as a rigid set of rules or as a medical diagnosis.
Source: Canva
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