How to spot them: Permanent duck pout, phone glued to hand. If in doubt, check Facebook.

If it’s not on social media, it didn’t happen. The Snapper’s workout is punctuated by pouting mirror selfies, always taken by the weights rack for some reason. They’ll then retire to a bike to apply Instagram filters and upload their beautiful pics.

Standard poses include a casual lift of the shirt to reveal washboard abs, a subtle flex of the guns – don’t look like you’re trying too hard! – and the shameless squatting bum-shot, also known as a ‘belfie’.

We wouldn’t mind so much if this narcissistic snapping stayed on the gym floor but it happens in the changing room too. Capture our bare ass when you’re snapping your ‘Wow I’m, like, sooo exhausted’ face and just see what happens to your selfie stick.