Author Spotlight: Carl Hayman

What does it mean to be a modern All Black, expected to perform at a mental and physical peak when player body mass has increased by 30% since the 1960s and new research is showing the horrifying impact of head injuries on rugby player brains? All Black 1000, Carl Hayman, wrote Head On after discovering his injuries had led to early onset dementia. He joins his co-author Dylan Cleaver and former professional rugby player John Daniell to talk about the new realities of the sport we love.