"Nets have been good fun at the moment with the big guys steaming in, all playing for their place," the 31-year-old told Sky Sports News. "The batters have been hopping around a little bit.
"It's great to have competition in a team and in a squad, I think that's very healthy. It's not just in the bowlers - it's batters, all-rounders, throughout the team. There's a huge amount of competition.
"Everybody's pushing each other very hard, and that gets the best out of the final XI chosen."
The first Test gets underway on November 21.