Sleep & Stress

Evidence on sleep, circadian health, light exposure, stress, and approaches marketed for better rest and recovery.

Evidence level:

Sleep & Stress

Morning Light + a Consistent Sleep Schedule

Keeping sleep and wake times reasonably consistent and getting light after waking can help anchor the body's circadian clock. Morning outdoor light is a powerful natural signal, while a bright-light lamp can be useful when adequate morning daylight is unavailable.

From $0 when using natural morning daylight and a consistent sleep schedule. A consumer bright-light therapy lamp commonly costs about $30–$150+, depending on size, design and features.Read card