by Charlie Spargo Jack Green, a sprinter and hurdler who appeared at the 2012 and 2016 Olympics, has joined a Sheffield start-up focused on employee health and wellbeing. Green joins as Champion Health's Head of Performance, citing his own struggles with mental health - and will be responsible for building and developing relationships with the start-up's current and new clients. Also joining is Paralympian Amy Conroy, who is made an ambassador for Champion Health. Champion Health helps businesses enhance the wellbeing of their employees, providing data-driven insights to inform wellbeing initiatives as well as letting employees discover workouts, mindfulness sessions, nutrition plans and more.