Why Men Sleep Differently

Sometimes sleep doesn't fall apart all at once. It sneaks up on you.

You can feel like you're sleeping "fine" for ages, and then suddenly you're not. For a lot of men, it happens gradually. This could mean going to bed later, getting up earlier, having a couple of drinks to relax, staring at a bright phone screen after dark, and lying in bed with your mind still replaying tomorrow's to-do list.

But do men physiologically sleep differently from women?

Research suggests there can be measurable sex differences in circadian timing and sleep-related rhythms, while still showing a wide spread from person to person. In controlled circadian studies, women tend to show earlier circadian timing (their internal "night signal" arrives earlier) and a slightly shorter intrinsic circadian period than men, which can shift sleep propensity earlier under identical schedules.[1] Controlled sleep and circadian protocols also report sex differences in circadian regulation and sleep-related rhythms.[2]

In light of Men's Health Week, it's worth considering the everyday habits that throw sleep off. It's usually a mix of how your body works and what your routine looks like. As for the good news? Your routine is often the easiest thing to change.

1) Your circadian clock is obsessed with light timing

Light is the strongest outside cue that tells your body what time it is and helps set your circadian rhythms. Brighter mornings strengthen day-night contrast. Brighter evenings can push your clock later and delay sleep readiness. If you want one "grown-up" sleep habit that actually works, start by changing when your eyes see bright light, not by collecting more supplements.

2) Sleep regularity may matter more than sleep duration

In a large prospective cohort with device-measured sleep, greater sleep regularity predicted substantially lower mortality risk. It was also a stronger predictor than sleep duration alone.[3] Sleeping in on weekends can feel like recovery, but your circadian system may interpret it as mini jet lag.

3) Evening "blue" reduction is plausible

Short-wavelength ("blue/blue‑green") light strongly influences circadian signaling. Systematic reviews on blue‑light-blocking interventions show outcomes can improve in some contexts, but objective metrics can be mixed and effects may be modest.[4][5]

Bring BON Charge Blue Light Blocking Glasses into your evening routine, and pair them with the BON Charge Blue Light Blocking Lamp or Light Bulbs to help create a calmer, more sleep-friendly light environment after sunset.

A simple Men's Health Week sleep routine (that doesn't require perfection)

• Anchor your wake time (pick a time you can keep most days).
• Get light early (outdoors if possible) and dim it down after sunset.
• Make the bedroom naturally dark: darker, cooler, quieter.
• Build a night-mode cue: amber lighting, a sleep mask, and/or blue‑blocking lenses for evening screens (timing matters).

Sleep is not a weakness. It's your most reliable performance enhancer and your most honest feedback system. For most men, the goal isn't perfect sleep. It's a repeatable rhythm your body can rely on.

References

1. Duffy, J. F. et al. Sex difference in the near-24-hour intrinsic period of the human circadian timing system. Proc. Natl Acad. Sci. U.S.A. 108, 15602–15608 (2011). https://doi.org/10.1073/pnas.1010666108
2. Santhi, N., Lazar, A. S., McCabe, P. J. et al. Sex differences in the circadian regulation of sleep and waking cognition in humans. Proc. Natl Acad. Sci. U.S.A. 113 (19), E2730–E2739 (2016). https://doi.org/10.1073/pnas.1521637113
3. Windred, D. P. et al. Sleep regularity is a stronger predictor of mortality risk than sleep duration: A prospective cohort study. Sleep 47, zsad253 (2024). https://doi.org/10.1093/sleep/zsad253
4. Glickman, G. L., Harrison, E. M., Herf, M., Herf, L. & Brown, T. M. Optimizing the potential utility of blue-blocking glasses for sleep and circadian health. Transl. Vis. Sci. Technol. 14, 25 (2025). https://doi.org/10.1167/tvst.14.7.25
5. Luna-Rangel, F. A. et al. Efficacy of blue-light blocking glasses on actigraphic sleep outcomes: a systematic review and meta-analysis of randomized controlled crossover trials. Front. Neurol. 16, 1699303 (2025). https://doi.org/10.3389/fneur.2025.1699303