fitness influencer

Noun - Some asshole in your gym who brings a tripod, sets it 20 feet away from his machine, then gets mad when another individual appears in frame, or a girl who wears skimpy clothing at an attempt to record other gym goers glancing her way to call them "creeps".

That girl over there has a whole tripod and is doing RDLs in front of that guy. She's clearly a fitness influencer.