Spinning – or indoor cycling – is one hell of a workout. Essentially High Intensity Interval Training (HIIT) on a bike, it's not for the faint hearted but the rewards are plentiful.
Essential reading: Best sports watches and trackers for the gym
That's why we've saddled up with a host of sports wearables, which offer differing degrees of insights into the world of spinning – and find out which is best for tracking your training sessions.
Wahoo Tickr X
The Wahoo Tickr X is a multisport chest strap that adds a tonne of excellent data and biometrics to nearly any tracked workout. However, it's the dedicated spinning mode that really catches the eye.
In-depth test: Wahoo Tickr X review
As well as on-the-money heart rate data, the Tickr X will keep an eye on your cadence and revs per minute while you spin, and you can use your paired smartphone as a screen if your bike hasn't got its own.
The graphs and data that the TickrX spits out are clear and easy to manage, although there's no power data. Chest straps aren't for everyone, either.
Moov added cycling data to its menagerie of sports apps earlier this year, but disappointingly spinning wasn't part of the mix. We complained heavily in our Moov review, and the company listened: Moov Now, which is set for release in August, adds indoor cycling metrics.
Thanks to Moov's spot on your leg it can track all manner of spinning stats, from cadence to power, which has only been possible with specialist (and ludicrously expensive) hardware before now.
The only downside of Moov Now is that it doesn't have its own heart rate monitor, although it does offer third party support for ANT+ devices, so you can strap on your own.
Pre-order: $59 (full price $99), moov.cc
Multisport is this Fitbit's name of the game, and the Surge has a host of modes for tracking different exercises. While the company has recently added bike mode, you're best off choosing a vanilla workout, which will turn off the GPS for indoor use.
You can then track the duration and intensity of your workout, which will benefit from the Surge's optical heart rate tech. You won't get the same specialist insights as you will from the Tickr X or Moov – but it's a simple system that will offer indoor cyclists accurate calorie burn and insights into your heart rate.
Don't forget to monitor your resting heart rate level to see the benefits over time.
Garmin Fenix 3
While Garmin's all-action sports has its own dedicated indoor cycling mode, out of the box it watch actually offers little more than the Fitbit Surge in terms of data. So why plump for this insanely expensive sports watch?
Well the Fenix 3 is ANT+ enabled, so it will support a host of cycling accessories, which you can build up to create the ultimate indoor cycling set up. Garmin Connect is capable of adding data from power meters, footpods, cadance meters (all not included) and a heart rate strap into your workout summaries. It makes for one of world's most advanced spinning trackers – albeit at an eye-watering price.
This dedicated indoor cycling app works in a similar way to the Garmin Fenix 3, by enabling you to hook up ANT+ sensors to your smartphone.
Again, you can hook up your choice of heart rate monitors, cadence sensors and power meters – although you may need to fork out even more for an ANT+ case, as the iPhone doesn't support that tech out of the box.
With cost mounting hard, it's a good time to mention that the app itself costs $10.99 per month. Hey, we never said that tracking your indoor cycling was cheap. However, you do get your own workouts built in, which is great for people who can't get down to a class.