The Flatline Workout – The Toughest New Exercise Class On Earth?

Everyone is talking about the Flatline workout, but what is it? Would we recommend it? Here's everything you need to know...

The Flatline workout is here, and it sounds pretty terrifying.

London gym chain Gymbox has opened a brand new set of (sweaty) doors in Farringdon, North London. To promote the new exercise spot, they’ve created what some are calling ‘the toughest exercise class on Earth’ – and it’s exclusive to the venue. It’s called the Flatline workout class and it is not for the faint-hearted.

The class was created by Gymbox trainers and endurance experts and is designed to take body exercises to an extreme by placing them in a fast-paced circuit, making it almost impossible to finish.

So here’s everything we know…

What is the Flatline workout class?

First you must wear a vest weighing 12kg and then complete a set of increasingly difficult activities, which focus on strengthening your power and endurance within a 45-minute circuit. It looks a little like this:

  • Weighted rope climb.
  • Box jump burpees.
  • High intensity bike.
  • Atlas stone throws.
  • Kettlebell thrusts.
  • 45-metre sprint while carrying two ammo cans.

Then the extreme routine is repeated five times and finishes with a cool-down (which is required to have an oxygen station installed).


George Edwards attends Flatline, which is described as the hardest and deadliest gym class in the world and is the latest in extreme work-out classes from Gymbox, to mark the launch of their new site in Farringdon, London.

What are the possible risks?

Although all exercise comes with some kind of risk, the extremity of this circuit means that the risks are far greater. Paramedics are on hand throughout the exercise class and oxygen stations, heart monitors and defibrillators were also legally required. Participants are even permitted to sign a death and organ donor waiver before they start.

So apart from needing medical assistance or potentially dying (!) here are some of the other side effects that the organisers make very clear before the high-intensity circuit begins:

  • Chest pain/breathlessness.
  • Vomiting (there’s actually a sick station!)
  • Fainting.
  • Cardiac arrest.

Where can you do it?

The Farringdon Gymbox opened on November 14th 2016 and the Flatline workout class is exclusive to the new venue, you just need to book. Click here for more info.

The organisers are calling for those that think they can handle it to have a go, although no one has completed the class so far. A body that’s ‘to die for’ seems pretty accurate, but seriously not worth actually dying for.

By Beth Cherry