Police said on May 12, a woman was using a stand-up tanning booth at Planet Fitness, 3845 Rivertown Parkway.
According to court documents, the woman said she looked up and saw a man looking down on her through the ceiling panels.
That man has been identified by police as Cody Postmus. Court documents say Postmus admitted to peeping when questioned by an officer.
Postmus was arrested Saturday. He faces two years behind bars for the felony charge of surveilling an unclothed person.
A preliminary examination is scheduled for June 2 in Kent County 59th District Court.