If your avatar looks different from you, perhaps in some ideal way, how does that make you behave? The Today Show profiles VHIL virtual reality exercise research.
Bailenson, J.N., Davies, A., Beall. A.C., Blascovich, J., Guadagno, R.E., & McCall, C. (2008). The effects of witness viewpoint distance, angle, and choice on eyewitness accuracy in police lineups conducted in immersive virtual environments. PRESENCE: Teleoperators and Virtual Environments, 17(3), 242-255.