Apple Watch help save teen's life

lSmartwatch, notification provider, fitness tracker, lifesaver - the Apple Watch's features list has just added an impressive new string to its bow, helping save the life of an American teen.

Having suffered chest and back pain following a football training session, Massachusetts resident Paul Houle used his Apple Watch to keep tabs on his heart rate.

With the wearable revealing his vital signs remained at an alarmingly high 145bpm for two hours after practice, Houle went to hospital where he was diagnosed with rhabdomyolysis - a condition triggered by exercise that can cause muscles to deteriorate and seep proteins.

"I was so dehydrated that my muscles started to actually break down and release a protein that is sort of toxic into my blood stream, which caused my heart, my liver and my kidneys all to shut down," Houle told CBS San Francisco.

With Houle praising the life-saving capabilities of his Moto 360 rival, Apple CEO Tim Cook got wind of the story, giving Paul a call personally.

As well as promising the recovering wearable fan a new iPhone 6S, Cook has offered Houle a summer internship with the Cupertino-based company.