I have only watched the first clip but the information on oxytocin, the autonomic nervous system, the immune system, stress hormones and progesterone enlightens and illuminates why empathy is a functioning part of the mammalian brain and body.
Oxytocin and being empathic reduces stress BUT only when shown how to use the energy in practice. When being OBJECTIVE one does not get the healing effects from oxytocin and being empathic!
http://greatergood.berkeley.edu/arti...ssion_research