How long is too long of a practice? I don't know if something changed recently, but it seems if I keep practicing even after I start loosing my range (about 20min) and I finish out an hour long session (with a good warmup about an 1-2hours before I start, for about 30min, and warmdown) my lips still turn out good the next day if they werent already bad that practice day. I'm not sure if something changed with how I play or what, but if I'm doing these practices correctly with good warmups/downs, can I really go too long? I am playing full volume on these, but I'm not trying to shoot out high notes all the time or anything. I also didn't know if there was a relation to when you started loosing your range and when you should stop practicing. Please post any opinions.