Chris Olsen is clearing the air about his ringworm diagnosis.

The TikToker detailed how he recently got the contagious fungal disease on his face, clarifying that ringworm “is not actually a worm” but a skin condition that he likely contracted through using unsanitary equipment at his local gym.

“When I go to a gym, I shower there because I get so sweaty,” he began in a May 7 TikTok video. “I’ve occasionally tried out a new gym—and I want to preface that this is not the gym’s fault—but they do not have showers there.”

During one particular workout, Chris believes he touched a surface that had not been wiped down properly and had previously came into contact with someone else suffering from a fungal disease. Though his usual post-workout shower would’ve reduced his risk of infection, the 26-year-old instead took his “sweet time” rinsing off his sweat, choosing to use the gym’s sauna first before going home to bathe.

“Because I’m a very sweaty person, it was very easily able to get onto my body,” he said of the fungus. “Then, I literally went into the sauna and gave it the perfect environment to really soak in.”