Hot yoga asks you to keep drinking all the way through the class. If forgetting to eat and drink is one of your regular problems, choose a different room.
This is not about the style being bad. It is about matching what you choose to the things you genuinely find hard. Dehydration creeps up quietly and you may not notice until you are already unwell. There are more kinds of yoga than anyone could work through in a lifetime, plenty of them free to follow at home, so you give up nothing by picking a cooler one.
Qur’an and Sunnah
where there is hardship there is also ease (Quran 94:5). The hardship spoken of there is the kind that comes to you, not the kind you go out and arrange for yourself.
فَإِنَّ مَعَ ٱلۡعُسۡرِ يُسۡرًا
So truly where there is hardship there is also ease
Qur’an 94:5read it in the library
Translation: M.A.S. Abdel Haleem, The Qur'an, Oxford University Press, 2004.
What the research says
A synthesis of breathing strategies for runners concluded that slow deep breathing has clear benefits at rest, while direct evidence for using it during hard physical effort is limited. The general shape of that carries over: these practices are best supported in calm conditions rather than extreme ones. Nobody has compared hot yoga with gentler styles for this group, so this is a sensible precaution and not a finding.
Harbour E, Stöggl T, Schwameder H, Finkenzeller T. (2022). Breath Tools: A Synthesis of Evidence-Based Breathing Strategies to Enhance Human Running.. Frontiers in physiology doi
Strength of evidence: one line of research. A single study, or a theoretical account.
Why it works
A practice that depends on a habit you struggle with will let you down on exactly the days you need it.
This one is still a draft. It is waiting on a scholar and a clinician to read it before it is published.
Near this one
Go slowly enough to learn something about yourself, rather than only a technique. What is worth keeping is knowing which breath does what in your body.
Holding your breath for a moment makes the next one deeper, which sounds backwards until you know why. The urge to breathe is driven by carbon dioxide, not by a shortage of air.
If you keep only one thing, make the out breath longer than the in breath. Four in and eight out is enough, and nothing clever is needed on top of it.