He tells Music Radar: "If I don't work out in the day and play a show I can feel groggy. If I work out it makes me feel good, my body feels ready. If I'm sat around all day doing nothing and I've eaten crap, I feel sluggish. Working out makes you feel energetic and positive, and you take that on stage with you."

The trainer is a friend of frontman Oli Sykes and he puts the band through their paces on a daily basis. Nicholls adds: "It's just general working out. When we first started touring we were kids and we were just like, 'Give me loads of beer, give me loads of food.'