I have been able to do a regular exercise regimen (began in February), although there are times I need to rest from a previous day if it was a tough workout.
My knees and hips are the worst, but sometimes my elbows and shoulders can be an issue. There are times after exercising - next day, its difficult to get up from a sitting position or do stairs - very sore. But I think it is important to keep in motion and do all I can to keep myself strong. Sometimes I think others in my class are like, oh, she is not here again. I average 2-3 days a week vs, the full 4, but its really all I can do. I am just happy to be doing more than I was!