Your first whole-body cryo session — what actually happens.

Arrive ten minutes early. A good studio will hand you a one-page intake form with the screening questions — cardiovascular history, cold sensitivity, pregnancy, recent surgery, medication list — and expect you to fill it out honestly. If anything on the form needs a conversation, the staff should talk it through with you before booking the session. Expect the whole intake to take five to ten minutes. Studios that skip this step are the first red flag of the category.

You'll be given a changing room and a set of gear: cotton shorts and a sports bra or bra-equivalent for women, shorts for men, dry cotton socks, mittens or thick gloves, and often a hat or ear covering. The rule is simple — no metal on your body (jewellery, piercings, watch), no damp clothing (no sweat, no lotion), and everything you wear must be dry. Moisture becomes ice instantly at these temperatures, which is the main cause of cold burn in this modality.

Before you step in, you'll meet the person who will operate the chamber during your session. They should introduce themselves, confirm your intake answers, and walk you through what happens step by step: how they'll signal start, what to expect during the session, how to signal you want out early, and what happens immediately afterward. If the operator rushes this or seems distracted, slow them down — this is the safety conversation, not the sales conversation, and it's non-negotiable.

In a nitrogen cryosauna, you step onto a platform inside the cylindrical chamber while the operator adjusts the platform height until your head is slightly above the rim. The nitrogen flow starts. In an electric chamber, you walk through the vestibule door, then into the main chamber, and the operator closes the door behind you. Either way, the first 15 seconds feel much colder than you expect, and your body's 'what is this' response kicks in hard.

Your breathing will speed up, your skin will feel intensely cold, and there will be a moment where you wonder if this was a mistake. This is normal. Slow your breathing deliberately — long exhales — and remind yourself that the session is two minutes, not two hours. The operator should be visible and talking to you; if you're inside the chamber in silence and can't see another human, something is wrong with the studio's protocol.

Between roughly 30 seconds and 90 seconds, most first-timers report the experience shifts from 'painful' to 'intense but tolerable.' The skin receptors that were firing most loudly start to desensitize, the breathing pattern evens out, and time becomes more bearable. Don't hold your breath. Keep your arms moving slowly (the operator may coach this). Avoid touching the chamber walls, and keep your gloves and socks on.

Now time speeds up — you can see the finish. The operator may count you down the last ten seconds out loud. When it's over, you step out and the rush of ambient air feels startlingly warm by comparison. The exit is actually the riskiest moment for minor slips and falls because your body is slightly disoriented from the cold. Move slowly. The operator should be right next to you as you step out.

A good studio gets you moving immediately — slow marching, light dynamic movement, maybe a stationary bike for three to five minutes. This accelerates rewarming and is part of why guided warm-up is a quality signal. You'll feel a pronounced flush — skin warming rapidly, a head-to-toe tingling, a rush of alertness. This is the catecholamine effect kicking in, and for many first-timers it's the most pleasant part of the whole experience.

Most first-timers report feeling unusually alert for two to four hours, followed by a pleasant tiredness by evening. Sleep that night is often reported as deeper and more restful. Some clients feel nothing notable — this is also normal, especially in people who are already well-rested and well-trained. The absence of a dramatic effect does not mean the session didn't work; physiology varies, and the cumulative effect of a regular practice is what the research actually describes.

Going in damp (shower first, towel off completely). Wearing jewellery (leave it at home). Holding your breath the whole time (breathe slowly through your nose when possible). Booking back-to-back first sessions ('give me the full experience' — no, do two minutes, then go home, then try again in three days). Skipping the warm-up to rush out the door ('I'm running late' — the warm-up is part of the session, not a bonus). The category has a low injury rate when the protocol is followed and a much higher one when it isn't.