Wellbeing · Sleep

Second pass at: Sleep tracking data and its considerable limitations

Wellbeing › Sleep fatigue heart rate obstructive sleep apnoea

g.valckenaereTL3Regular12 Jun 2025#1

Posting this under the heading it deserves: Second pass at: Sleep tracking data and its considerable limitations Everything below is what sits behind that.

A measurement question rather than a physiology one.

Consumer sleep trackers report stages. I understand those stages are inferred from movement and heart rate rather than measured, which makes the nightly breakdown considerably less solid than the total.

Which of the numbers these devices produce is worth looking at, and which should I stop reading?

10 likes 13mo

l.chevalierTL3Regular12 Jul 2025#2

On the opening post — agreed on the reasoning, with one qualification.

When sleep problems need attention: if sleep does not improve as weight loss continues or if it worsens, discussing with a clinician is prudent. Sleep disorders are real and treatable.

14 likes 13mo

p.boatengTL21 Aug 2025#3

Sleep quality changes reported here have several plausible contributors, and separating drug effects from weight change, from schedule change, and from anxiety is genuinely difficult.

It reads as pedantry until the day it does not.

0 likes 12mo

This topic was referenced in

Injection timing and sleep disruption — the long versionWellbeing › Sleep · 2 replies

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