I just returned from a four day vacation. As usual, I was plagued with headaches 3 out of 4 days. I had heard somewhere that oxygen could be helpful in alleviating mig/headache pain. I did find an "oxygen bar" and had a 20 minute session. I felt relief afterwards and it was the first time in 2 days that I felt good. I did this again 2 days later when I had another mig. Has anyone heard of this or tried this? Thanks for your replies.