England’s most-capped men’s player Ben Youngs sets out to re-examine the game that has defined his life. Is there a link between concussion and long-term brain health? Details of organisations offering help and support with dementia, MND or feelings of despair are available at bbc.co.uk/actionline . Follow more on the BBC Sport app, iPlayer and Sounds. ============= SUBSCRIBE so you never miss out on our best videos ➡️➡️bit.ly/1sFodyu ============= Find us here: BBC Sport: bbc.co.uk/sport Facebook: facebook.com/BBCSport X: x.com/BBCSport Instagram: instagram.com/bbcsport TikTok: tiktok.com/@bbcsport #bbcsport #rugbyunion #concussion #mnd #BenYoungs #sixnations #rugbyworldcup