Original title: Effects of one night of sleep deprivation on single- and dual-task gait
Maura Seynaeve, Anna C. Render, Peter C. Fino, Toon T. de Beukelaar · October 2026
Walking seems automatic, but it actually requires brainpower. Researchers wanted to know if losing sleep changes your walk simply by draining your attention. They tested eighteen adults walking normally and walking while doing a memory puzzle, both after normal sleep and after zero sleep. Pulling an all-nighter made people take longer, slower steps and narrowed their side-to-side margin of stabilityA measurement that reflects how close a person is to losing their balance during movement.. Because losing sleep produced different walking patterns than just being mentally distracted, lack of sleep does more than just tie up your thoughts.
You are balancing a tray of drinks through a crowded room. If someone suddenly asks you to solve math problems, your attention splits, and you walk stiffly and deliberately to avoid spilling. But if you carry the same tray after staying awake for twenty-four hours straight, your legs feel heavy and your side-to-side balance wobbles regardless of what you are thinking about. Here, the math problem is the dual-task condition, and being exhausted is the sleep deprivation, showing that exhaustion impairs your physical stability in a way that pure mental distraction does not replicate.
People often assume that being sleep deprived affects movement simply because your brain is unfocused or distracted. This research shows that staying up all night alters physical balance and foot placement differently than just doing a difficult mental task while walking. Understanding this difference helps clarify the specific risks sleep loss poses to basic daily mobility.
The study was conducted exclusively on eighteen healthy young adults (average age 22.2 years), so the findings may not generalize to other age groups. It only evaluated gait changes over brief two-minute walking trials following a single night of total sleep deprivation.
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Effects of one night of sleep deprivation on single- and dual-task gait — Maura Seynaeve, Anna C. Render, Peter C. Fino et al. — Journal of The Royal Society Interface — doi:10.1098/rsif.2026.0047
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.