The world of white collar fistfights is probably something you were first introduced to by Brad Pitt’s abs in the Fight Club basement. But for most, the closest you’ve probably come is a few forward rolls in an ill-fitting judogi; taken to the local sports hall by your mum to try martial arts as a kid, to get you away from the TV.

However, the UFC and, let’s be honest, the irresistible rise (and now decline) of Conor McGregor, has inspired a new generation of fight fans. Add to this the fact a fighter’s body – one that promises functional lean muscle and flexibility, not barbell bulk – is the physique of the moment and it’s clear to see why the popularity of martial arts classes is on the rise.

Freddy Brown of KO Muay Thai Gym believes the higher intensity fighter’s workouts (rather than your standard steady-state run every morning) is the most efficient, effective way to burn fat while building muscle. And he’s right.

A study by Colorado State University researchers found short bouts of intense exercise, like sparring, can burn an extra 200 calories over 24 hours of rest thanks to a roundhouse kick up the backside to your metabolic rate.

Not only that, the Journal of Sports Sciences revealed this type of workout boosts HGH production by 450 per cent. It’s a hormone that’s great for fat-burning, but will also help repair and build lean muscle after a tough session.

At a time when mental strength is viewed in parity with physical, the fact martial arts can boost both brain and body is an added boon. For the stressed and downtrodden worker it’s the ideal elixir, since The BMJ discovered deploying your fists of fury increases self-esteem. One Physical Educator study even revealed it reduces symptoms of both anxiety and depression. Knockout.

It’s a notion backed up by Luiz Ribeiro of London Fight Factory, who explains: “You’re really not going to have a chance to stress about work or anything else when someone’s attempting to punch you in the face.” Can’t argue with that.