I just took about 10 days off of playing while away on vacation. I did my normal practice routine yesterday and all went well. At rehearsal tonight, however, my chops were gone after just 20 minutes. Rarely in my lengthy musical career have I felt so inept at the business end of a horn. So, the question is: After taking some time off of playing, have any of you found it helpful to vary your practice and/or warm-up routines to help rebuild what may have gone away during your time off the horn?