The journey
Four stages, in the order you actually need them
Nobody buys a sauna first. You want to know whether heat and cold do anything, then whether you will stick with it, then how to do it properly, and only then what to buy. Every page on this site sits at one of those four stages, and this is the order.
Stage 1
Does it actually work?
What heat and cold genuinely do to a body, graded on the evidence, including the claims that do not survive it.
11 pages →
Stage 2
Doing it right
The protocol: how hot, how cold, how long, how often, and the timing rule that decides whether you recover or blunt your training.
8 pages →
Stage 3
Prove the habit cheaply
Before a five-figure decision, find out whether you will actually do this. The cheapest honest way in, and what it gives up.
4 pages →
Stage 4
Buying for keeps
The real all-in cost, the electrical work nobody quotes, what each brand actually warrants, and which unit suits your space.
24 pages →