Lewis Hamilton has raised a fresh injury concern caused by porpoising on top of the back pain he suffered at the Azerbaijan Grand Prix.
He was clearly in a lot of discomfort as he clambered out of his Mercedes at the end of the Baku race, before claiming the pain was "100 times worse" than it had looked. The Briton also later showed off his gruelling recovery regime to get himself as fit as possible for this weekend's race in Montreal.
While back problems are more than enough to be worried about, it is not the only potential negative side-effect on Hamilton's mind. As well as spine damage, there is also growing concern over micro-concussions being caused by the relentless bouncing.
