I've been to some seminar about 'brainpower' and there was this guy explaining how incredible your brain is and that you can achieve most or all goals you set for yourself with the right mindset. I agreed with him on many things and there were some nice demonstrations, but then he went a bit off the deep end, talking albout mental energy and aura's. He took a coin and stuck it on his forehead. And we all got our coins, spoons and keys and you can really just stick them on your forehead, you can sometimes even feel some pressure pushing it against you. I tried it at home and I could bend my head pretty far forward before it fell off. The guy said it's because that area contains the highest concentration of mental energy (it doesn't work on your arm for example) and he began telling that people could magnetize their bodies. I don't see how that's related, since the euro coins we used are not magnetic. (But I didn't mention that to him in front of the audience). Which begs the question: Why does it stick? Obvious answers refer to sweaty or greasy skin, but you can wipe it clean. Wash yourself thoroughly there and wipe on it with a lot of tonic, but the coins still stick. Also, he said it doesn't work as well when you are stressed, since then your 'mental energy' and your aura is diminished. How much serious research has been done on subjects of this nature? Some say your aura can be measured, but they just identify it with the electromagnetic field every person has around them. But does that diminish when you are stressed or ill like they say your aura does?