On your marks, reset, go: your September fitness guide

“Some people need the intensity of the class environment to push them through,” says Kobox founder Shane Collins. Going hard at the start can be just the kickstart you need. Kobox’s Fight Club package offers seven classes in seven days — Collins says it’s like a “factory reset” for your body and advises only to do it a couple of times a year. Or there’s the 12 Round Challenge (12 classes during September) if you want to spread things out a little. The next of the infamous Hell Weeks run by Barry’s Bootcamp (seven classes in seven days) begins at the end of the month, as does Sweat It’s five-session Survivor Week, while Barrecore has a new HIIT barre class called Sweat if you’d rather go easier on the joints.

Outsourcing your workout to a PT is the natural solution (if you’re Kim Kardashian) but you also need to be able to afford lunch. Kobox’s new pay-as-you-go gym in Chelsea has more economical solutions: an e-PT programme that directs you through a four, eight or 12-week workout schedule straight from your phone. “We’ll send you your programme, accompanied by simple video demos of how to perform the exercises,” says Collins. “When you get stuck, our on-site coaches can help guide you through. You’re getting 80 per cent of the benefit of a PT, at 20 per cent of the cost.” Prices start at £20.

Upgrading your kit can be just the motivation for getting back on treadmill. Apple launches its Series 5 Apple Watch next week, featuring podcast-streaming, period-tracking and a potential camera for gym selfies, while Lululemon is launching its “best men’s workout top yet” next month: an anti-stink, moisture-wicking, seamless top called the Metal Vent Tech 2.0, designed by ambassador and American gridiron star Trey Burton of the Chicago Bears.

The run-up to Christmas is race time. The Royal Parks has last-minute charity places available for its half-marathon in October — you have six weeks to get in training — while MoRunning, the race series which supports The Movember Foundation, is putting on various events in November: the London edition, in Greenwich Park, takes place on November 30 and you can choose from 1.5km, 5km or 10km. Perfect if you’re anticipating a place in the marathon next month.