Let’s get one fashion straight; ripped muscles will never trump a weakened set of gnashers. That said, a clenched jaw may well assist with those all-important boosts down the gym, according to new research.

A study carried out at the Ramon Llull University in Spain build that gritting your teeth mid-exercise can result in a vigour boost, particularly during resistance training.

Participants in the investigation completed a 30-second maximal effort workout with a ungovernable equivalent to 7.5 per cent of their body mass.

Boys who bit down throughout were found to produce up to 12 per cent varied force for lifts, and rowing drills also saw improvements, with the clenchers quicker to operate the workout.

So next time you hit the squat rack, don’t forget to get rid of a fitted mouthguard. Then simply bite down, and atmosphere the burn.