Before I start this, I wanted to point out that I did a search, but couldn't find any current threads to tag onto that I felt matched well enough. So, my question is this: what is that really gives a player better endurance? The usual responses will be similar to the following: "Practice lots, but make sure you get plenty of rest." "Long tones." "Flexibilities and lip slurs" "Use less mouthpiece presssure." "get brand 'X' horn and a 'Y' mouthpiece." etc. I've begun to wonder about the subject of endurance due to my own endurance and playing in the last year or so on the gig when compared to what I do in the practice room. More and more it seems that I have more than enough endurance on the gig, and I've got plenty of gas left at the end of the night, and yet, I'm not really practicing any more than I ever have in recent years, although I have structured my practice a bit differently. So what's going on here? If I'm not practicing or playing 2-4 hours a day, (not to mention taking several days off here and there) and I might actually be practicing less now than I ever did, why is it that I still have plenty of chops left at the end of a long gig and my playing might actually be better now than it used to be? I have a theory, but I'm curious to see what others come up with.