Squats, planks and push-ups are on the agenda as Spartan group trainers arrive at Trinity Buoy Wharf tomorrow, Saturday.
A sweat-filled session for visitors starts at Parkour Generations will act as a high-intensity preview to the Reebok Spartan Race - the world's leading obstacle course - to be set up in Allianz Stadium Park on May 16.
The mass workouts focus on body weight exercises and can help shed up to 700 calories during a single stint.
Starts at 2pm, admission free.
Go to spartanraceuk.uk .