Fitbit flex wristband review: a weight loss tracker that makes fitness a habit

Counting steps and calories adds up to shedding 5lbs sensibly

Zepp sensor review: a racket-mounted app that can improve your tennis

How to capture, measure and analyse your swings in three dimensions

LeapFrog activity tracker for kids soon to hit the shelves

LeapFrog makes a game out of physical activity, with a talking Tamagotchi-style pet that can be strapped to the wrist. By Samuel Gibbs

Can the Valkee 2 ease jet lag by lighting up ears? It didn’t for me

Valkee's bright light headset says it can help winter blues (SAD) and rid travellers of jet lag by blasting light into their ears. This traveller was hopeful, but arrival didn't bring results. By Samuel Gibbs

Listen up: wearing headphones can endanger life, study finds

US research finds number of pedestrians injured while wearing headphones has tripled in six years

UP, the bracelet with a healthy app-etite for your lifestyle

Justin McGuirk: A rubber wristband called UP devours data on your activity levels, sleep patterns and eating habits and allows you to share this information with a 'team' of friends

Chinese workers link sickness to n-hexane and Apple iPhone screens

Staff suffer health decline after supplier's use of toxic chemical to clean western gadgets