Chris Johnson is attending voluntary workouts with the Titans for the first time in his career. Johnson is trying to make a change after a down year in 2011. "Of course it motivates me because I want to do better than I did last year," Johnson said. "I always like to get better and better every year. I feel like I didn't get better last year. There are a lot of things that go into it, but I'm not the type that's going to make excuses."