exercise..and going to the gym..I've been on Imbruvica 2 weeks now...Haven't been to gym..and I miss it..as well as exercise. I fear picking up some virus or other, although gym is kept (as it appears} clean. Also developed a rash, after taking Alloprovinall to prevent high Uric Acid count. I'm a constant "mover"...but think exercise very important. What are others doing? I'm a very active Senior.