4 ms·
Also of interest may be the Mammalian Diving Reflex (https://en.wikipedia.org/wiki/Mammalian_diving_reflex https://en.wikipedia.org/wiki/Mammalian_diving_reflex
by 100ideas 10y ago
Also of interest may be the Mammalian Diving Reflex (https://en.wikipedia.org/wiki/Mammalian_diving_reflex https://en.wikipedia.org/wiki/Mammalian_diving_reflex) - Exposing your face to cold water and holding your breath can induce bradycardia (slowing of pulse), dropping it by 10-20 BPM.
In my experience, it leaves me with a sense of calm and general body-relaxation similar to how I feel 30-60 minutes after cardio workouts.
- justinlardinois 10y agoIf you can manage to keep calm long enough for bradycardia to set in. I took a marine biology course in high school and we had an experiment to show braycardia that involved holding your breath and putting your face in a bowl of ice water. No matter how hard I tried, I couldn't keep my body from panicking and pulling away.
- 100ideas 10y agoThis is the quintessential way to activate the Mammalian diving reflex at brunch, cocktail parties, the office, or the classroom. Unless you are inclined to panic, you and your more medically-minded friends will be fascinated by the significant and immediate effect it can induce on your PNS and heart rate.
- goda90 10y agoI listened to a podcast about free divers and how they use that reflex to get to amazing depths. Very interesting stuff.
- cloverich 10y agoThough I don't know how efficacious it is, it's listed as a treatment for acute episodes of specific kinds of tachycardia (like Wolf Parkinson white syndrome - http://emedicine.medscape.com/article/159222-overview#a1 http://emedicine.medscape.com/article/159222-overview#a1)