The 10 best health and fitness accessories for your smartphone

The strap is adjustable so it will fit arms of most sizes, it has a reflective logo to help drivers see you if you're running in the dark and you can fully operate your phone through the armband's transparent window cover.

It won't fit every phone, but there are versions of it available for a number of different handsets.

8. Wahoo Fitness Blue SC Bluetooth Speed and Cadence Sensor (£49.95)

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The Wahoo Fitness Blue SC is essentially a cycling computer. Just mount it to your bike and it will track your speed, cadence and distance travelled.

Wahoo Blue SC

The device itself doesn't have a display, but you can use Bluetooth to link it to the Wahoo Odometer app for iOS and view your stats- you can even attach your phone to the bike if you're feeling brave, but make sure it's securely fastened

Avid cyclists can also use the app to see how far they've cycled over the last week, month, year or the overall total distance.

Even if you don't have your iPhone with you while you're cycling you can still sync your data when you get home and the Wahoo Fitness Blue 5C has a replaceable battery which can keep working for up to a year with no charging.

As with many other fitness accessories it's also compatible with some third party apps, such as Cyclemeter and MapMyRide.

9. Sennheiser CX 685 Sports earphones (£45)

If you'd rather have earphones than headphones, a pair of CX 685's by Sennheiser is a great alternative to a JayBird Sportsband 2.

Sennheiser CX 685 Sports

They use adjustable rubber hooks to ensure a secure fit, regardless of the size or shape of your ear. They're also shock absorbent, water resistant and durable.

When it comes to sound quality they're pretty good too, particularly if you like a lot of bass.

They block out background noise and don't suffer from sound leakage, so you can avoid distractions and avoid irritating others. That does mean they're not great for outside use as you won't be able to hear cars and the like (important if staying alive is your goal), but they're ideal for exercising in the gym.

Trust us - if you don't go for the more secured versions you'll be cursing within minutes as your earbuds slip out on the sweat you create. We've been there. It's not pretty. We fell off the treadmill.

10. Withings Smart Blood Pressure Monitor (£79.99)

If you want to keep track of your blood pressure, the Withings Smart Blood Pressure Monitor gives you all the tools you need while keeping things simple.

Withings Smart Blood Pressure Monitor

Like most blood pressure monitors you wrap it around your arm to get a reading. It connects via a cable directly to your iPhone, iPad or iPod Touch and the results are displayed on the screen of your iDevice when you launch the Withings app.

You can get a single reading or a mean average and see your blood pressure history. You can even email your results straight to your doctor at the push of a button.

The app separates readings into am or pm so you don't get mixed up when comparing them and it supports multiple users if you've got a more health-concious family.

James Rogerson

James is a freelance phones, tablets and wearables writer and sub-editor at TechRadar. He has a love for everything ‘smart’, from watches to lights, and can often be found arguing with AI assistants or drowning in the latest apps. James also contributes to, and and has written for T3, Digital Camera World, Clarity Media and others, with work on the web, in print and on TV.