The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
cardiorespiratory fitness that's been shown. There's been not only like observational data, but there's been intervention studies looking at endurance getting someone on a stationary cycle and then adding the sauna on top of that and V2 max improvements were greater in individuals that are also doing the sauna right after their training.
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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People who performed 30 minutes of cycling and then sat in a sauna for ~15 minutes afterward saw greater gains in their VO₂ max after 8 weeks of training compared to those who did the workout without sauna.
Exercise training for 8 wks increased cardiorespiratory fitness and reduced fat mass, but exercise + sauna further improved cardiorespiratory fitness and lowered blood pressure & total cholesterol.
Not only did post-exercise sauna bathing lead to better exercise performance in the heat, but it also improved the runners' performance in moderate conditions, suggesting that the benefits occur regardless of the environment.
Recent research from the lab of @LaukkanenJari has shown that 15 minutes of sauna use after exercise 3x per week improves VO2 max more than exercise alone after eight weeks.
Post-exercise sauna bathing for 3 weeks induced heat acclimation adaptations and improved exercise performance including 𝑉O2max, running speed, and time-to-exhaustion more than endurance training alone.
in one study male Runners engaged in a 30 minute sauna session two times a week after their workout these Runners were able to increase their running until exhaustion by 32% and they experienced an accompanied 7% increase in plasma volume and 3.55% increase in red blood cell count
so I informed kind of my strategy based on this not only you know the studies show that you can improve your V2 Max you know additionally by using the sauna but it also improves your exercise performance not only in the heat you know which kind of makes sense you're using the sauna you're becoming more heat acclimated but it also improves your performance just in normal weather or like not hot weather I guess as you would call it
4–7 sauna sessions per week, 20 minutes at 80°C+, reduce cardiovascular mortality risk by 40% over a decade.
Regular sauna use raises BDNF and improves verbal memory in older adults.
Sauna protocols only generate the longevity effect when sessions exceed 30 minutes.
Hot-tub bathing yields cardiovascular benefits comparable to traditional Finnish sauna at matched core-temp dose.