Jeff Bercovici

Sports are about challenging our physical limits. But the greatest limit of all remains undefeated: age. We're taught to believe that ageing thwarts effort and grace, talent and grit, outstanding teamwork and individual brilliance.

But a new breed of top professionals - the likes of Roger Federer, Jo Pavey and Tom Brady - are overturning long-held assumptions about the duration of primetime in a sporting career. It's not that aging causes a decline in fitness; rather, a decline in fitness causes aging.

Full of cutting-edge science, technology and practical tips, Play On empowers you to reverse the ageing process, and extend your peak years.