Regular exercise improves circulation and is good for overall health, skin included. The gym itself, though, is a mix of heat, sweat and shared surfaces, and a few simple habits can stop a workout from turning into a breakout.
Before you start
Go bare-faced if you can. Heavy foundation sitting on warm, sweaty skin can block pores. If you prefer some coverage, choose a light product labelled non-comedogenic, which means it is formulated not to clog pores, or a tinted sunscreen if you are training outdoors.
Tie your hair back. Hair products and oils can transfer to the forehead and cheeks when you sweat.
Keep your hands off your face. Equipment, mats and weights are touched by many people. Wiping them down before use and avoiding touching your face during a session cuts the amount of dirt and bacteria that reaches your skin.
After your workout
Cleanse soon. Dermatologists advise washing your face with a gentle cleanser as soon as possible after exercise, and showering promptly if you have acne on the chest or back. Sweat left to dry on the skin, especially under tight clothing, can irritate pores.
Change out of damp clothes. Tight synthetic kit that stays wet traps sweat against the skin. Fresh, loose clothing helps.
Moisturise. A light moisturiser after cleansing helps restore the skin barrier, particularly after a hot session or a swim in a chlorinated pool.
Pack wipes or pads for later. If there is no shower available, cleansing pads can remove sweat and residue until you get home. Products with salicylic acid can suit oily skin, but people with sensitive skin should check with a pharmacist or dermatologist before using acids regularly.
Do not forget the towel
Bring your own clean towel, pat rather than rub your skin, and wash towels and workout clothes after every use. A towel that is used several times between washes can hold on to sweat and bacteria.
If breakouts persist despite good habits, a GP or dermatologist can recommend treatment that suits your skin type.
Sources: American Academy of Dermatology guidance on exercise and acne, British Association of Dermatologists patient information.