15 top fitness gadgets - Telegraph Nike Fuelband (£129) Simply tracking your activity can be a good way to motivate yourself to do more. The Nike Fuelband makes that simple: it's a wristband that contains motion sensors to track your movement through the day, translating your activity into 'Nike Fuel' points that aim to let you compare yourself to others, regardless of the sports you're doing. It also counts the steps you take - 10,000 per day is seen as a good indicator of a healthy lifestyle - and tells the time. It comes in three colours but the sleek black version is the coolest.