Last month Cech suffered an injury to his right knee after coming for a cross and falling awkwardly in training.
Despite the bumps, Cech, 29, is determined to keep putting his body on the line. He said: "What can I say? This is football and things like that happen. I'm unfortunate that I always get a nice knock with a nice scar.
"When I played again after my first injury I said if I need to put my head somewhere I will do it. It's part of the game.
"One day if I feel the fear of putting my head in the middle of some battle or scrum, then I stop. But so far I haven't felt that."