@lesohara Unless you're getting your core body temp to 102.2°F (39°C), you're only getting maybe half the benefits that sauna offers.

@solitudedude__ We have been asking the same question: are HSPs released on a relative increase of core body temp or is it an absolute threshold. Based upon our deep dive of the evidence, we think the answer leans toward it being an absolute.

@ViktorBunin There isn't currently sufficient longevity evidence to support incorporating cold plunge into my protocol. I am supportive of cold plunging generally and think it's great that people vibe with it. Also always open to new evidence though.

@XDigestly I too thought this was fascinating. I had the read out device in the sauna with me (cooled with an ice pack) watching my core temp update every 30 seconds and seeing nothing change. After 15 min I wondered if it was working lol. Then it started shooting up. Makes sense though.

@themoneygps That was the most interesting lesson to me: getting the reps in to learn what 102.2°F (39°C) intuitively feels like.

@mrfboyer Steam rooms block evaporative cooling but top out around 110 to 120°F air temp, which limits the heat transfer to the body. Dry sauna (174-212°F) overwhelms the body's cooling capacity, driving core temp higher with greater predictably.

@premmpinto The good news is now you won't be wasting your time.

Also, sauna eliminated 85% of microplastics from my ejaculate and dramatically reduced environmental toxins in my body:

@blackflagpod I've avoided that given the risk of aerosolizing toxins and my default humidity of over 40% is ideal.

@chrislakin Hot bath is a legitimate alternative for core temperature elevation. Most can't sustain 40°C water long enough to hit the duration needed. I'm using dry sauna because the full benefit profile is broader, not just HSP activation. Also, I'm able to ice my boys and maintain top