Calm · 5 min
Physiological sigh
Two inhales, one long exhale. The fastest known way to downshift the sympathetic system.
Backed by 40+ peer-reviewed studies
Your nervous system, retrained in 6 minutes a day.
BreathLab translates the research on respiratory physiology into simple daily protocols. No incense. No guru. Just measurable shifts in HRV, focus, and sleep.
5.5
breaths per minute
+38%
Average HRV improvement after 8 weeks
Lehrer et al., 2020
−27%
Reduction in self-reported anxiety
Balban et al., Cell Reports 2023
6 min
Daily practice to see measurable effects
Stanford Huberman Lab
Protocols, not playlists.
Browse all 24Focus · 8 min
Resonance breathing
5.5 breaths per minute aligns heart-rate variability with the baroreflex. Use before deep work.
Sleep · 6 min
4-7-8 wind down
Extended exhale increases parasympathetic tone. Designed to be done lying down, lights out.
The lab in BreathLab
Every protocol cites the paper it came from.
We won't ask you to take it on faith. Each session links to the underlying research, the effect size, and what it can't do. We're skeptical so you don't have to be.
- Cyclic sighing & mood Cell Reports, 2023
- HRV biofeedback & anxiety Frontiers in Psych., 2020
- Slow breathing & baroreflex J. Physiology, 2018
- Nasal breathing & cognition J. Neuroscience, 2016