I usually have 1 hour in the evening to practice/play my trumpet after my main job wich is not music-related. I try maintain consistent practice schedule of 5 days from Monday to Friday. After two days off on Saturday and Sunday when I return to trumpet on Monday I can do my best: I have pretty good tone, I can play some musical phrases up to G on top of the stuff. After half an hour of playing it seems like I'm doing even better then in the beginning of a session. "Warming-up" term can surely be applied here. All in all one hour practice session on Monday feels like I'm a real trumpeter On Tuesday however everything changes: I can hardly blow any note above the third space C, tire up pretty quickly and have no Monday fun. Wednesday, Thursday and Friday do not bring any better results. Then Saturday and Sunday off and Monday fun comes and... goes on Tuesday Should I start off with less effort on Monday? Any other advice?