Short answer
Sometimes. Some gyms allow clean athletic shorts and tops in the sauna, while others, including several YMCAs, ban workout clothes and ask for swimwear or a towel. The clothes you just sweated in are a bad idea everywhere, and shoes and rubber or plastic sweat suits are often banned. Check the posted rules, shower first and sit on a towel.
Can you wear workout clothes in a sauna?
There is no single rule. What you can wear depends on where the sauna is. At home, wear whatever you like. In a gym, spa or public sauna, the posted rules decide, and they vary more than you might expect: some gyms accept clean athletic shorts and tops, others accept swimwear only.
What almost every set of rules agrees on: shower first, keep shoes out, and do not bring sweaty or dirty clothing into the sauna.
What gyms actually allow: real examples
These are rules published by individual gyms. They show how much policies differ, even between YMCAs. Rules can change and can differ between locations of the same chain.
| Gym | Workout clothes? | Other rules |
|---|---|---|
| YMCA of Wilson | Allowed: swim attire or athletic apparel | Bare feet or water socks only, no shoes |
| Valparaiso Family YMCA | Partly: synthetic shorts and non-transparent sports bras OK | Not allowed: sweatshirts, cutoff shorts, underwear, pants, street shoes, rubberized or plastic clothing, see-through clothing, hats and sauna hats |
| Channel Islands YMCA | Not allowed: swimsuit required | Shoes, street clothes, workout clothes and rubberized clothing prohibited; shower first; bring a towel to sit on |
| YMCA of San Francisco | Not allowed: swim attire only | Towel or swim attire in locker room saunas; shoes prohibited; shower first; 5-minute cool-down after exercise |
| 24 Hour Fitness | Follow club rules | Shower required before using the sauna; individual clubs post their own rules |
If you are not sure, ask at the front desk. For chain-specific details, see whether the YMCA has a sauna, our page on 24 Hour Fitness saunas and our overview of which gyms have saunas.
Why the clothes you trained in are a bad idea
Even where athletic clothing is allowed, the shirt you just sweated through is not a good choice. Cleveland Clinic explains that body odor comes from sweat mixing with bacteria on your skin, and recommends washing clothes regularly and wearing clean, loose-fitting clothing. In a small, hot room shared with other people, that matters.
The better routine after a workout: cool down for a few minutes, shower, then go into the sauna in clean shorts, swimwear or a towel. YMCA of San Francisco asks for a five-minute cool-down after exercise before entering. See should you sauna before or after a workout for timing.
If workout clothes are allowed, what works best?
- Clean and dry: fresh from your bag, not from your workout.
- Loose: loose shorts and a top are more comfortable in the heat than tight compression wear.
- Simple: skip clothes with metal zippers, buckles or rivets, since metal heats up in a hot room.
- Fabric: it matters less than you might think. Valparaiso Family YMCA accepts synthetic shorts, so you do not need cotton.
- No sweat suits: rubber or plastic suits are banned at several gyms; see our guide to waist trainers, sweat belts and shapewear in the sauna.
What to wear when workout clothes are not allowed
Bring a swimsuit and a towel. A towel to sit on is standard almost everywhere; InfoFinland tells sauna-goers to cover the bench with a sauna bench towel before sitting down. Our guides to gym sauna etiquette and what to wear, what to wear in a sauna and the right sauna towel size go into more detail.
Saunas in Finland and Europe
Expect different rules abroad. InfoFinland explains that swimming halls often have separate saunas for women and men where swimsuits are not allowed, though you can cover yourself with a towel, while many mixed saunas allow swimwear. MyHelsinki says the same of Helsinki and adds that at most mixed public saunas you can wear a swimsuit or a towel. Workout clothes are not part of the picture.
Shared sauna etiquette checklist
- Shower before you go in.
- Sit on your own towel.
- Leave shoes outside; check whether flip-flops are allowed (see flip-flops and shoes in the sauna).
- Leave your phone outside. 24 Hour Fitness bans all photos and filming in sauna areas, and MyHelsinki says phones do not belong in the sauna.
- Ask before pouring water on the stones, as MyHelsinki recommends.
- Keep the door closed and do not stay longer than the posted time limit.
Worried about hygiene in shared saunas? Read are gym saunas safe and sanitary.
Frequently asked questions
Can you wear workout clothes in a gym sauna?
It depends on the gym. YMCA of Wilson allows swim attire or athletic apparel in its sauna, while Channel Islands YMCA prohibits workout clothes and requires a swimsuit. Check the rules posted at your gym or ask the staff before you go in.
Can you wear the clothes you worked out in?
Avoid it, even where athletic clothes are allowed. Sweaty clothes carry the sweat and bacteria that cause body odor into a small, shared, hot room. Shower and change into clean shorts, swimwear or a towel first.
What should you wear in a gym sauna if workout clothes are not allowed?
Usually a swimsuit, often with a towel to sit on. YMCA of San Francisco requires swim attire in its co-ed saunas and a towel or swim attire in locker room saunas.
Can you wear a sports bra in the sauna?
At some gyms, yes. Valparaiso Family YMCA lists non-transparent sports bras, swimsuits and synthetic shorts as acceptable sauna attire. Gyms that require swimwear only may not allow it, so check the rules.
Can you wear shoes in the sauna?
Usually not. Several YMCAs ban shoes in the sauna, and YMCA of Wilson allows only bare feet or water socks. Leave your gym shoes in the locker room.
Can you wear a sauna suit or plastic sweat suit in a gym sauna?
Often not. Channel Islands YMCA and Valparaiso Family YMCA both list rubberized or plastic clothing as not allowed in their saunas. If your gym does not mention it, ask the staff first.
Sources
- Foundation YMCA of Wilson: Facility guidelines (sauna)
- Valparaiso Family YMCA: Aquatics (sauna, steam room and whirlpool attire)
- Channel Islands YMCA: Sauna and steam room rules (PDF)
- YMCA of San Francisco: Locker room and sauna guidelines
- 24 Hour Fitness: Member policies
- Cleveland Clinic: Body odor (causes and hygiene)
- InfoFinland: Finnish sauna
- MyHelsinki (City of Helsinki): Helsinki sauna etiquette
This guide is based on the linked facility rules and sources, checked on 19.10.2026. Rules change and vary by location, so always follow the rules posted at your sauna.