That seeing the breasts of a woman uncovered lowered blood pressure in men, which the medical industry attacked when it made public about twenty years ago.  Since I am not a medical professional, I can't comment about the authenticity of the study, but I can tell you that I always enjoy seeing those titties!  For real is better, but pics don't hurt, either.  And to date, no heart or circulatory problems here, so maybe there was something about that study...