Start the year as you mean to go on, with some of London's coolest fun ways to get fit in January 2016.
Serpentine New Year's Day 3k Fun Run
Everyone can manage a 3k Fun Run, even if you've spent the last two weeks lolling on the sofa watching Gavin and Stacey re-runs. If you're feeling particularly energetic on the first day of 2016, you can always opt for the 10k race instead.
1 Jan, noon, Kensington Gardens and Hyde Park, £16/£18
VeloPark Mince Pies Revenge Duathlon
Head to the brilliant closed-road circuit around the Olympic velodrome in Stratford for this run-bike-run challenge, guaranteed to burn off some of your extra winter weight. The event — a two-mile (two lap) run then a 10-mile (10 lap) cycle finishing with a one mile (one lap) run — is suitable for beginners as well as experienced duathletes.
10 Jan, 10.30am, VeloPark, E20 3AB
Get in shape in January 2016 in the German Gymnasium, the venue that hosted the first ever-indoor events for the 1866 Olympic Games. These brand new fitness classes feature a mix of Victorian gymnastics and Indian club swinging (one of the sports practiced in the building when it was a gym), boxing and bodyweight drills.
10 Jan, 10am, German Gymnasium, 1 Kings Boulevard, Kings Cross, N1C 4BU, £15
Run for Chocolate
Complete this gentle, untimed North London 5k jog, and you'll get a warming mug of luxury hot chocolate when you finish.
16 Jan, 10.30am, Trent Park, Enfield, EN4 0PS, £20
Ride It West London
Set off from one of London's last surviving country estates to explore the countryside beyond on this stunning January Sportive. Choose from 40-mile, 54-mile or 73-mile routes and pedal off that festive indulgence.
17 Jan, 8.30am, Osterley Park, Isleworth, TW7 4RB, £20/£25
Yogis Who Lunch
Enjoy a fabulous morning yoga class guaranteed to wake you up, stretch you out and get your appetite going for the gastronomic treats to come. After the class, head downstairs to Carousel restaurant for a fresh, zingy, new year feast.
23 Jan, 11am, Carousel, 71 Blandford Street, W1U 8AB, £25
Change the way you think about exercise in 2016 with a discobarre class, a ballet barre-based work-out that will 'totally transform your body'. The disco-ball lit classes are set to a stunning soundtrack of underground disco and house favourites.
25 Jan, Pop Brixton, £12
House of Voga
Try a yoga class with a difference; Voga combines yoga stretching with Voguing poses and banging 80s beats. All on a London rooftop with gorgeous views over the City.
31 Jan, 11am-12pm, Coq D'Argent, No.1 Poultry, EC2R 8EJ, £15.75
Royal Parks 10k
Still clinging on to your New Year's Resolutions by your fingernails? Book a place in this end-of-Jan 10k to give you the impetus you need to keep putting on your trainers each week.
31 Jan, 9.30am, Hyde Park, £15/£17
Take the plunge into the chilly waters of Charlton Lido with 50 other brave swimmers and raise some cash for Demelza Hospice Care for Children. Fancy dress is recommended.
31 Jan, 2pm, Charlton Lido, SE18, £10/£5