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Re:Show HN: Improve cognitive focus in 1 minute by airstrike on Wednesday February 07, 2024 @11:47AM (#39290807)
IMHO the whole point is your body also doesn't really know how fast it needs to breathe. Often when we're stressed we're taking fast, shallow breaths even if there's no real lion in the vicinity. By telling your body to breathe at X speed, you break the stress cycle

YMMV

Re:Show HN: Improve cognitive focus in 1 minute by lukas099 on Wednesday February 07, 2024 @04:12PM (#39294386)
My mileage does indeed vary. I always feel either oxygen-deprived or high on hyperventilation after.

Telling myself to breathe slower is fine. Just not at some predefined interval (or worse, whatever interval the yoga instructor feels like I should be breathing at)