Jo McLelland, founder of Fulham studio Body Society, urges us to shake up what we think of as exercise. In fact, her first suggestion to those self-isolating was to have more sex.

“You know, it’s a great way to waste time, rekindle your romance and keep fit,” she tells me over the phone. “It’s a great workout for your glutes and your pelvic floor. If you really get into it you could go all the way through the Kama Sutra.”

What about those people with children and no time to spend in flagrante?

She suggests playing with them. “Run around the house like a loony, do a dance-off with the kids, anything to get you active, burn the calories and get that heart rate up.”

If you don’t fancy that either, or don’t have any children you can borrow, a big spring-clean lugging heavy bags for charity down the stairs or a big garden sort-out will similarly do the no-exercise exercise trick.

“You don’t have to be doing squats and lunges in your living room,” says McLelland. “If you’re calling loved ones on the phone for a catch-up, don’t sit on the sofa, walk around the house.”

For those looking for more structure, McLelland recommends starting an at-home exercise routine with a “buy in”. At the Body Society, sessions start with a “buy in”, which could be something like 50 burpees. Everyone has to do 50 before they can start working out.

Another is 10 squat jumps, 10 push-ups, 10 lunges. “It means that before you even start, you are already pushing yourself and getting out of breath,” says McLelland.

It’s something you can do at home as well. She suggests putting on your favourite song and having a boogie around the living room for the length of the song before you start exercising – or, you can keep it traditional and do the burpees.

Not having gym equipment shouldn’t limit what you can do at home. A dining chair is good for step-ups, simply add tin cans or bottles of wine for weights. Fill a tote bag and use it as a kettlebell. McLelland says just holding a tea towel above your head is better than nothing. Similarly, two tea towels, one under the ball of each foot, mean you can do mountain sliders.

She explains: “From a plank position, use the tea towels to slide one leg into your chest and then back out, making a horizontal running motion with your feet. It’s a great workout for your shoulders, arms and core,” says McLelland.

“You want to work your whole body in every exercise you do because you get a bigger return on your workout.”