If you think there are only two types of people that frequent the gym - body builders and you - think again. The Serena Williams Grunter, The Enabler, The Centre of Attention, The 'But First, Let Me Take a Selfie' Girl, these are just a few of the characters you might encounter during your post-work work out... but which gym junky are you?

Perhaps you're the Disco Devotee, so caught up in the Beyonce blasting out from your Beats headphones that a misplaced dance move takes out the person waiting patiently behind you for a turn on the cross-trainer. Or maybe you've got plenty in common with the Hoarder, a quasi-Neanderthal usually found holed up in a corner with every. single. kettle bell scattered under his feet like a pile of spat out bones. With over 25 hilarious entries covering everything from gym style to gym etiquette, anyone who's ever signed up for a spin class or benched their own body weight will recognise the Lycra-clad cardio queens and protein-shake chugging posers profiled in Gym Junkies.