Portugese footballer, Cristiano Ronaldo, has launched a health and wellness app that harmonises advice on fitness, nutrition and mental wellness in one seamless experience.

The stress coach talks about working with Bear Grylls on the Mettle app for men

Survivalist, Bear Grylls has partnered with four mental health heavyweights and former TV producer, Neil Smith, to create an app targeted directly at men. Mettle is designed to promote sleep, help people manage stress and improve mental focus.