It involves swinging around the gym studio on a trapeze. Jukari (which means “play” in Sicilian) was developed by Reebok in conjunction with the creative directors of Cirque du Soleil. Jukari came into the Reebok gym in Canary Wharf in May and will be rolled out to other gyms across the UK.

In an hour-long workout an instructor guides a maximum of 12 people per class through moves using a specially designed trapeze called a FlySet attached to the gym ceiling.

Swinging through 360 degrees will definitely strengthen your arm, legs
and core muscles more effectively by targeting muscles that often
remain unused. The 12 signature moves include the beginner’s straddle
jump, with your legs bent outwards as you swing through the air, and
the woodpecker, a push-up performed while leaning into the bar.

Find classes at the Reebok Gym. Far as I can see you have to be a member though. Boo.