I am a disabled veteran who has been on Xanax for 18 years. Low dose at the start, but for the last 10 years, I take 3 1/2 mgs a day (morning / noon / night). Without it, I get very ill. My question: I work out 4 to 5 days a week. I take a 1/2 mg in the morning (roughly 5 hours before working out) then I workout and take 1 mg within an hour after working out. Tonight, for the first time, I worked out within an hour of taking the 1 mg. I feel fine, and would like to continue working out late in the evenings and then follow with my last dose of 2 mgs about an hour after working out (roughly 10pm). Is there any harm in working out on Xanax, especially in my case where I have tolerated it for so many years? Wes