What is it? Handstands, basically.

How much does it cost? Handstands are currently free to perform, although it’s always worth learning good technique. My trainer was aerialist Zoe Jones, who holds workshops in London and works one-to-one for about the price of a personal trainer. Alternatively, just search YouTube for hand-balancing tutorials.

What does it promise? Improved core strength, posture, upper-body strength, flexibility, balance and coordination.

What’s it actually like? One of the best things I’ve done. Yes, really. I’d never managed an unsupported handstand in my life before, but Zoe started me off gently with stretches and planks to help me learn technique. From there, we progressed to flipping all the way over on to a crashmat. Gradually, by learning which parts of my body I needed to flex, lock and pull in, my stability began to improve. I can’t say I looked gracious at any point – I was a wobbling, purple-faced Jenga tower with a great big exposed belly – but within an hour, I could just about hold myself unsupported. For all of two seconds, admittedly, but that still counts.

Best and worst bit Going upside down for the first time is a bit hairy, but the whole thing is brilliant. Hand-balancing is an incredible bodyweight workout – my shoulders ached for about 24 hours afterwards – but you barely notice it, because you’re so busy learning a new skill. It’s addictive, too – the next morning, I found myself practising at home, up against a wall.

Is it worth it? Yes. I really can’t recommend this enough.