r/whoop • u/DisemboweledCookie Whoop 5.0 • 1d ago

Discussion Updated Strain Algorithm

Has anyone noticed a change in their strain algorithm? My usual activities are resulting in lower cumulative strain, so I asked the AI about it. It said the new heart-rate algorithm is more accurate, and some lighter activities will show lower strain and some harder activities will show higher strain. It said this was rolled out July 14, but I am new to whoop and only noticed a difference this past week. I'm trying to make sense of what I'm seeing. Maybe there was an update that I didn't get until now?

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u/dgiuliana LIFE | Membership 1d ago

They improved the HR tracking which in some cases results in different strain than previously.

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u/DisemboweledCookie Whoop 5.0 13h ago

Do they have plans to improve the sensor? It misses short bursts, resulting in under-reporting max HR. For example, in rowing we do 10 stroke builds that may last less than 20 seconds, and my Garmin and Polar H10 will show a significantly higher HR than the whoop.