Recovery Happens at Night. So Does Breathing.
Athletes spend a third of their lives asleep, breathing on autopilot. How that breathing goes can shape how well they recover.
This is also an area full of hype. So this article separates what is known from what is being sold, and is honest about where the evidence runs out.
Sleep Is a Performance Variable
Start with why it matters. Mah et al. (2011) asked 11 collegiate basketball players to extend their sleep, aiming for 10 hours a night for 5 to 7 weeks after a normal sleep baseline.
Timed sprint performance improved from 16.2 to 15.5 seconds. Free throw percentage in practice rose by 9%, and three point percentage by 9.2%. Players also reported less fatigue.
It is a small study with no separate control group, and in game performance was not measured. But the direction is clear, and it matches what coaches see every season.
The 2021 expert consensus on sleep and the athlete, led by Walsh and colleagues, makes the practical point. A fixed rule for every athlete is unlikely to be ideal. Sleep needs should be individualised, and teams should use a toolbox approach that includes sleep education and screening.
Breathing is one tool in that box. It is not the whole box. Training load, travel, caffeine, screens and late games will usually matter more than any breathing drill.
Nose or Mouth at Night: What Is Known
The clearest data on breathing route during sleep comes from a laboratory study by Fitzpatrick et al. (2003). Twelve healthy adults with normal nasal resistance slept under two conditions: breathing through the nose only, and through the mouth only.
Awake, airway resistance was similar either way. Asleep, it was a different story. Median upper airway resistance was 12.4 units with mouth breathing against 5.2 with nasal breathing.
The number of breathing disturbances per hour of sleep was 43 with mouth breathing and 1.5 with nasal breathing. The authors concluded that nasal breathing lowers upper airway resistance and the tendency toward obstructive events during sleep, which may explain why healthy people breathe mainly through the nose at night.
Two cautions. This was a small study of healthy people, not athletes, and the breathing route was controlled in the lab. It shows that nasal breathing is the better default at night. It does not show that any product forcing nasal breathing improves sleep or recovery.
Mouth Taping: The Honest Answer
Mouth taping has exploded on social media. The research has not kept up.
In 2025, Rhee et al. published a systematic review of mouth taping and similar devices in people with mouth breathing, sleep disordered breathing or obstructive sleep apnoea. They found only 10 eligible studies, with 213 participants in total. Eight tested mouth taping and two tested chin straps.
Only two studies reported benefits, both in mild obstructive sleep apnoea, and those improvements were modest. The rest found no meaningful benefit.
Several studies also raised safety concerns. Taping the mouth of someone with a blocked nose risks asphyxiation, and the authors warned of a potentially serious risk of harm for people adopting the trend without assessment.
None of the studies were in athletes. There is no good evidence that mouth taping improves athletic recovery or performance.
Our position is simple. We do not recommend mouth taping. If an athlete snores, wakes with a dry mouth or is often unrefreshed, the next step is a medical review and a sleep screen, not tape. A blocked nose, a structural problem or undiagnosed sleep apnoea needs to be found, not covered up.
Slow Breathing Before Bed
A short slow breathing routine before sleep is easy to justify, as long as the claim stays modest.
A 2022 meta analysis by Laborde et al. of 223 studies found that voluntary slow breathing increases vagally mediated heart rate variability during a session, immediately afterwards and after multi session programs. That is a marker of parasympathetic activity, the rest and recover side of the nervous system.
What the evidence does not yet show is that a pre sleep breathing routine improves sleep quality or next day performance in elite athletes. That research has not been done well enough to make the claim.
It is also worth separating this from breath hold work. Slow, light breathing before bed is about calming the system down. It is the opposite of a hypoxic training stimulus.
So treat it as a low cost, low risk wind down tool, especially on nights when athletes struggle to switch off, such as after evening games or long travel.
A simple routine: lie down, lights off, breathe in gently through the nose, then a slow, relaxed exhale through the nose, slightly longer than the inhale. Keep the breathing light and quiet. Five minutes is enough.
Athletes who already use slow breathing during the day tend to find this easier, because the pattern is familiar rather than something new to learn at midnight.
No breath holds in bed. Breath hold work belongs in supervised daytime training, never while falling asleep, and never in or near water.
Putting It Together for a Squad
Screen. Ask about snoring, mouth breathing, nasal blockage and daytime sleepiness. Refer anyone who flags for medical review.
Educate. Make sleep a performance topic, not a lifestyle topic. Athletes listen when it is framed around sprint times and shooting percentages, which is exactly what the basketball data measured.
Build daytime habits. Light, slow nasal breathing at rest and during easy training builds the habit of breathing through the nose.
Wind down. Offer a slow breathing routine for nights when athletes cannot switch off.
Skip the fads. No mouth tape without medical advice, and no promises the evidence cannot back.
FOR ELITE ATHLETES, THIS CAN HELP YOU
✔ Understand why nasal breathing is the better default during sleep
✔ Use slow breathing as a low risk wind down tool before bed
✔ Avoid the risks of mouth taping without medical assessment
✔ Treat sleep as a performance variable, backed by the research
Performance takeawayBreathe through the nose by default, wind down with slow breathing, and get snoring checked by a doctor.
Control your breath. Control the result.
Want this in your program? Enquire about Vincere Protocol for your team.
