Spots are formed when hair follicles become blocked by dead skin cells mixed with sebum. If bacteria on the surface of the skin proliferate, inflammation and infection can occur, resulting in angry, painful bumps and pustules.
When these hair follicles become blocked, sebum production continues regardless, and so those who are prone to acne can find that sport can make their skin worse. Exercise generates heat and sweat, and these two factors can contribute to the formation of new spots.
Of course, exercise is an essential part of a healthy lifestyle and should not be abandoned for fear of spots. The best approach to take is to make sure that you use appropriate and gentle skincare products to cleanse your skin as soon as you finish exercising.
You could also consider a course of active acne laser treatment, which effectively targets the bacteria present on the skin that can lead to spots developing. Scarring is often the result of infection and inflammation, which can be more noticeable than the spots themselves.
So, next time you go to the gym, spare a thought for your skin and make sure you cleanse it thoroughly but gently as soon as you finish your work out.