Frog, I believe that the mind has more power than science can measure. Maybe these things DO happen through brain waves or some other physiological means.
How do Asian monks generate enough body heat to make steam come from their wet garments? How can some people create an electric current through their bodies powerful enough to knock someone on their ass and catch paper on fire?
If these events are real, then I see no reason why we can't do other extraordinary things through the power of suggestion.