How science has demonstrated chemically that prayer makes us more charitable and empathetic with others - fascinating short talk by Neuroeconomist Paul Zak who has published on this subject in the prestigious journal Nature:
http://blog.ted.com/2011/11/01/trust-morality-and-oxytocin-paul-zak-on-ted-com/
Perhaps also explains how marriage is 'half your deen' and how stabilising it is for young men of high testosterone
