I loved the hot classes I took last winter and at £18 a drop-in I can't keep going twice a week. I have a small spare room, an oil-filled radiator, and a cheap humidifier I bought for a cold. Has anyone genuinely reproduced this at home, and if you have, what did it cost you in electricity and in damp?
I did the version you're contemplating and I'd tell you not to. Space heater plus humidifier in a 2.5 by 3 metre room, three or four times a week over one winter.
What I got: maybe 32C on a good day, condensation running down the window every session, and black mould in the corner behind the door by February that took a landlord conversation and a repaint to resolve. The electricity was the smaller cost and it wasn't nothing — a 2kW heater running two hours a session, several times a week, is a visible line on the bill.
If you're renting, this is a deposit-risking hobby.
It's the worst possible room. Cold external wall plus deliberate humidity is a mould recipe. If you try anything at all, do it in the warmest internal room and open everything for twenty minutes afterwards.
I am renting, and the spare room is the one with the coldest external wall, which I suspect is exactly the wrong room for this.
The pop-up hot yoga tents exist and I've used one for two years. It's a zipped fabric dome you set up over your mat with a small heater feeding it, so you're heating four cubic metres instead of forty.
Honest assessment: it gets properly hot, it costs a fraction to run, and it feels absurd. You can't see out, there's no teacher, and the sequence is on a phone outside the tent shouting through fabric. I use it maybe once a week now. It solves the physics and it doesn't solve the reason the class was good.
Warm, not hot, is the achievable version at home — mid-twenties, door closed, no humidifier. Anything past that and you're fighting your building. Save the drop-ins for once a month if you miss the real thing.
Different angle: do the sequence unheated and see what you actually miss.
I did the 26 postures at room temperature for three months and the practice was still good — arguably better, because I stopped mistaking sweating for effort and started noticing my balance. What you lose is the extra range that heat gives you, and there's a fair argument that borrowed range isn't yours anyway.
Also worth saying plainly: heat plus 90 minutes plus dehydration is a real physiological load. If you've got blood pressure or heart issues, that's a conversation with a doctor before you build a hot room, not after.
@tarp_and_tea · 4mo ago · 3 replies
Know the target before you decide it's achievable: the classic hot series runs at about 105F, which is 41C, at around 40% humidity, for 90 minutes, with a fixed sequence of 26 postures.
An oil-filled radiator in a UK spare room with a normal window is not going to hold 41C, and it's the holding that matters — you'd be heating it for two hours before you start and it drops the moment you open the door. The humidity half is harder still, and it's the half people forget. A cheap humidifier in a cold room mostly makes a wet wall.
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@immersion_ivy · 4mo ago
41C and holding it is the part I hadn't reckoned with — I was picturing getting the room hot, not keeping it there for ninety minutes with the door shut.
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@sear_after_sam · 4mo ago
And the moment anyone opens the door it's gone. In a studio that's a plant room and a proper ventilation system, not a radiator.
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