2. Join the military

Get army fit with bootcamp and PT sessions led by British Military Fitness. Their signature classes involve strength, speed, power and cardiovascular fitness – so you know that you’re going to get maximum impact and results. These park-based workouts aren’t just for the hardcore; they’re tailored for all abilities and levels of fitness. You can get your first class free and they’re held in parks up and down the country.

Don’t like group activities? BMF also offers a personal training option for either one-to-one or small group training. Check out your nearest BMF class here. Prices start from £40 a month.

3. Get playing

When you’re at school, exercise is all about games – something we move away from as we get older. But as the weather improves, why not go back to playing outdoors? Rabble is a collective dedicated to helping us ‘stop exercising and start playing’, by transforming HIIT workouts into immersive, adrenaline-fuelled games. They play everything from dodgeball to frisbee, guaranteeing to make fitness so much fun, you forget that you’re working out. Over the course of the hour, you work on speed, endurance, coordination, agility and strength, and it often ends in a drink at the pub. Absolutely ideal. Prices vary, starting from £39 a month. Find a game near you here.

4. Set up your own circuit

Aside from a yoga mat to protect your kit from getting a bit soggy, you don’t really need any equipment to create a decent outdoor circuit – nature provides it all.

Adrienne tells us: “For me, I would make sure that the workout has a combination of both cardio and strength exercises. I would alternate between pulse raisers like skipping or jogging and bodyweight strength exercises like squats, lunges and push-ups. This is a really effective way to train so you can get a great workout in just 30 minutes.”

Download a Tabata app and set it to 50 seconds work, 10 seconds rest and give the following a go after first having a good stretch:

High knees on the spot
Walking lunges
Sumo squats
Starjumps
Tuck jumps
Plank and side planks
Skipping (if you have a rope)

If you’re in a park, interval runs between trees can be a brutal finisher to any circuit. Look for a pair of trees about 200 metres apart and try sprinting from one to the other before gently jogging back (which counts as your active recovery). Aim for ten reps before taking a two-minute break and going again.

5. Join a run club

Swap your treadmill class for a weekly run club and see the same – or bigger – gains. We’ve all gone crazy for those HIIT-and-run classes but most running clubs offer a range of different sessions that challenge every part of your run practice. You might find yourself sprinting on a track on Mondays, settling into a technical run on a Wednesday (hello, hill sprints!) and strapping up for a long run at the weekend.

You don’t have to have experience to join; most running clubs have different tiers for different speeds so don’t let the idea of being slow put you off. You can find your nearest club here.

(Pictures: Getty)

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The days are getting longer – how to work out outside more