CortiLoop guides
Understand cortisol, stress and recovery.
Plain-language guides to cortisol rhythm and wearable signals, with the uncertainty and context left intact.
CORTISOL · 8 MIN
What is a healthy cortisol rhythm?
Learn why cortisol should rise and fall—and why permanently low is not the goal.
Read the guide →HRV · 7 MINHRV and stress: what the signal can tell you
Read HRV as one source of context for activation and recovery, not a cortisol test.
Read the guide →WEARABLES · 8 MINHow wearable stress tracking works
Understand what your device measures, what it estimates and where cortisol fits.
Read the guide →BASELINES · 6 MINWhy a personal baseline changes the picture
See why your recent range gives cortisol-related patterns more meaningful context.
Read the guide →How these guides are made: CortiLoop identifies editorial ownership, review status and primary sources on every guide. Independent clinical review is still pending. Read our evidence standard →