Funding round swells digital health firm Whoop's value to $3...

Fitness wearable company Whoop has raised another $200 million in funding that will help fund its expansion into international markets – and take on deep-pocketed rivals like Amazon, Apple

Google ramps up wearable credentials with $2.1bn Fitbit buy

Digital health round-up: consumer wearables are lagging

A long way to go for consumer wearables

Fitness trackers wildly inaccurate at counting calories

Fitness trackers are good at accurately measuring heart rate - but come nowhere near on calories burned.