POLAR VANTAGE V2

£449, polar.com

The Vantage V2 is an excellent all-round multisport watch with detailed fitness, sleep and recovery tracking along with daily guided workout recommendations, but it’s the tracker’s innovative fuelling feature that makes it stand out as a fat fighter. FuelWise uses your heart rate to help you understand when to fuel during a cardio running workout, but also provides a detailed post-run estimate of when and how much fat, carbs or protein you used as a fuel source during your training. Features ★★★★★ Innovation ★★★ ★ OVERALL ★★★★★