Most fitness tech nags you to do boring stuff: stand up, go for a walk, check your heart rate. So when you see Polar’s new Grit X displaying an instruction to drink and take 10g of carbs (approximately one Hobnob), you might think you’ve finally found a wearable to suit a more sofa-bound existence.
Of course, the reality is very different. Even with its built-in GPS, heart-rate tracking, barometer, compass and altimeter in full flow, the Grit X’s battery lasts a whopping 40 hours, so you’d need the stamina of a pill-popping Energizer bunny to beat it.
It can even give breakdowns of how you performed on the uphill and downhill parts of your route, plus there’s turn-by-turn route guidance.