Visiting the gym is great for your health, but it can also expose you to skin infections and rashes such as staph infections, ringworm, and hot tub rash. Research shows that bacteria can live on 10% to 30% of gym surfaces—like equipment, floors, and yoga mats.

Fortunately, a few simple habits can help protect you from common skin infections and illnesses that spread easily through shared equipment and sweaty environments. Below are the most common gym-related skin infections and how to prevent them.

1. Hot Tub Rash

Hot tub rash is caused by Pseudomonas aeruginosa, a bacteria that thrives in hot tubs and pools that aren’t properly disinfected. This itchy, red rash typically appears a few hours to a few days after using a contaminated hot tub—often around the stomach or torso.

Hot tub rash often resolves on its own after a few days. However, if symptoms persist or the rash returns frequently, it’s best to see a dermatologist.

How To Prevent It:

  • Shower with soap after using a hot tub or pool

  • Wash your swimsuit thoroughly

  • Ask gym staff how often they test chlorine and pH levels in water

2. Impetigo

Impetigo is a contagious bacterial infection that leads to red, itchy sores which ooze, burst, and form yellow crusts. It’s commonly caused by staph or strep bacteria, which can enter the skin through cuts or abrasions.

You can contract impetigo by touching shared surfaces, using someone else’s towel, or working out with an existing rash. Treatment usually involves topical or oral antibiotics.

How To Prevent It:

  • Avoid contact with active blisters

  • Never share towels or personal items

  • Use clean washcloths and towels

  • Wash your hands frequently without scrubbing the skin harshly

3. Plantar Warts

Plantar warts are thick, fleshy growths that develop on the soles of the feet due to infection by human papillomavirus (HPV). Many people have HPV without symptoms, but some strains can cause warts or even contribute to certain cancers.

Plantar warts are difficult to treat and don’t go away on their own. See a healthcare provider if the wart is bleeding, growing, painful, or shows no improvement with home treatment.

How To Prevent It:

  • Always wear shoes or sandals in the gym, especially in wet areas like showers

  • Avoid touching, scratching, or picking at warts

  • Keep feet dry and wear clean socks

4. Ringworm

Ringworm is one of the most common fungal infections contracted at the gym. The fungus that causes it, called dermatophyte, thrives in dark, warm, and moist places—like sweaty socks, gym shoes, and locker rooms.

Common types of ringworm include:

  • Athlete’s foot: Causes scaly, itchy blisters between toes or on the soles

  • Jock itch: Results in red, itchy rashes in the groin area

  • Body ringworm: Causes red, circular patches on limbs and torso

Over-the-counter antifungal creams often help, but persistent cases should be treated by a dermatologist.

How To Prevent It:

  • Wear shoes in all gym areas, including showers

  • Change socks and gym clothes daily

  • Wash gym clothes frequently and let them dry fully

  • Avoid sharing towels and personal items

  • Shower immediately after workouts

5. Staph Infections

Staph bacteria normally live on the skin without causing problems. However, when they enter the body through a cut or sore, they can lead to painful infections.

At the gym, staph bacteria can be transmitted through contact with contaminated surfaces like shared equipment, towels, or clothing. Infections may present as red, swollen boils that feel warm and tender. Some may ooze or produce drainage.

How To Prevent It:

  • Cover cuts and open wounds

  • Never share towels or personal care items

  • Clean hands with soap or an alcohol-based sanitizer

  • Wipe down gym equipment before and after use

Other Gym Infections

In addition to skin infections, you may also be exposed to other contagious illnesses at the gym, including the cold, flu, and herpes viruses.

Common Colds and the Flu

Cold and flu viruses spread through respiratory droplets and contaminated surfaces. You can become infected by touching your face after using shared gym equipment or touching doorknobs.

How To Protect Yourself:

  • Get an annual flu shot

  • Wipe down gym equipment before and after use

  • Use alcohol-based hand sanitizer

  • Wash your hands thoroughly with soap and water

  • Avoid the gym if you or others appear sick

Herpes

Herpes simplex virus (HSV) can cause cold sores or genital herpes. Though less commonly transmitted in gyms, the virus can spread through shared towels, direct contact with open sores, or contaminated surfaces.

How To Protect Yourself:

  • Avoid touching others’ visible cold sores

  • Don’t share drinking bottles, towels, or utensils

  • Wash hands frequently, especially after workouts

  • Seek medical advice if you have sores near your eyes or persistent symptoms

What Causes Gym Rashes and Infections?

Gym environments are ideal breeding grounds for germs due to heat, moisture, and close contact. Germs can be present in:

  • Damp shoes

  • Dirty gym bags

  • Shared mats and benches

  • Locker room floors and showers

Airborne transmission is also possible in gyms, especially in poorly ventilated areas with heavy breathing from group workouts.

A Quick Review

Gyms can expose you to various skin infections, including staph, ringworm, and hot tub rash, as well as illnesses like the flu and cold sores. However, with proper hygiene practices—like washing hands, avoiding shared items, wearing footwear, and cleaning equipment—you can reduce your risk and keep working out safely.