But the purpose of this spage-age-looking contraption is suitably intergalactic – it helps you to defy gravity. And just why would you want to do that?

The theory is that by reducing your body weight as you run, an increase in speed is achieved, allowing you to train
at higher working levels.

As well as increasing endurance for people who just want to be super-fit, the anti-gravity treadmill helps those recovering from sporting injuries.

The machine gets you on your feet in a supported way (you cannot fall), and removes the need to put too much weight on your limbs. It can even help you to recover more quickly, according to the folks behind the design.

You can book time on the Alter-G at Balance Performance Physiotherapy in Clapham. The centre runs 30-60 minute sessions from about £12.50. Space suit
not included.

Where: 113 Gauden Road, Clapham, SW4 6LE
Web:  balancephysio.com
Tube: Clapham North/ Clapham High Street