A bad fall can kill anyone. Non-elders usually are more durable and have better reaction time though. I suspect reaction and bracing may matter more than human

A bad fall can kill anyone. Non-elders usually are more durable and have better reaction time though. I suspect reaction and bracing may matter more than human scale durability given sucker punches are especially dangerous because the body doesn't react or attempt to shield any vitals. Clearly healthy young men aren't durable enough to never die that way. In the case of elders the decline in reflexes may matter more - although they certainly do take injuries worse.