#7
Breathwork (Box Breathing)
Used by Navy SEALs. Activates parasympathetic system in 90 seconds.
A 2023 Stanford study led by Andrew Huberman found that cyclic sighing was 24% more effective than meditation at lowering stress markers. This technique activates the parasympathetic nervous system within 90 seconds, lowering heart rate by an average of 10 bpm and cortisol by 18%. It is used by Navy SEALs and Olympic athletes for instant control.
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