Its organisers declare it’s the world’s hottest new exercise, and so they imply that in a literal sense. I’m in an underground gymnasium in central London about to participate within the “Ring of Fireplace”, a brand new 45-minute class on the boutique gymnasium chain Gymbox. All through the category I shall be doing pictures of extremely scorching sauce, together with one made with the Carolina Reaper, the spiciest chilli on the earth.

The category is the brainchild of the Lazy Scientist, a person whose actual title is Stephen Rushton. He has a PhD in biochemistry and his personal line of scorching sauces. Rushton claims that consuming chillies will make me work out tougher. It’s because chillies comprise capsaicin, a chemical compound that he says will increase our