Hi Michael-my dad has been doing the tongue depressor thing 7 times a day for 5 minutes since BEFORE all of treatments. I say-start now to form the habit. They recommend he do this for one year-he does it religously but now it is difficult because his poor mouth is a mess-he started his 3rd week of rad on Monday-he is down to a liquid diet only- I am in the medical profession and based on recommendations from MD's to PT's-the act of religous stretching of the jaw does the trick. Hey-maybe we can start JAW YOGA!