Re: MY LIP JUST FELL OFF!!!
I think the get a life comment was a little harsh, nothing wrong with what he's doing.
The only time I think you should begin biting hard is for altissimo, if not you might be playing on too hard of a setup (mouthpiece and reed)? 3-4 Hours straight is pretty bad, without any breaks I can play for maybe 40mins. You could try a thinner reed, unless your already pretty thin or else your intonation will start to fail..
Or you could try not practicing EVERY single day, maybe take a break? I practice for an hour (besides the 2 hours during school) at home like once every 2-3 days. Muscles get stronger by tearing and then healing, but if you dont let them heal then your not gaining much...the mouth has a bunch of muscles (more than just 2 muscles like big foot ball players, embrochure is a lot harder to get stronger :P), it takes time to get use to.