A couple nights ago, I had a long night of playing --- lead for jazz for an hour, and 3 hours right after of pep band (High C's and above not uncommon). The next day (yesterday), had some light trumpet ensemble playing. Didn't reach above an A, and everything was working very well. Tonight, I went in to practice, and tried to work on some things that were getting in the upper range, about half an hour or so in, and realized that my muscles were having trouble keeping my corners set. Everything in the staff was working great, but I could feel the tiredness in my muscles when I went up. This surprised me, as it's been two days since any major playing. Any suggestions for how long I should expect until my muscles are fresh again? Or any ways to speed up recovery, now or in the future?