From my prospective, it sounds a bit incomplete. Try this, "A non-platonic kiss can be both psychologically and physiologically beneficial."

The pleasure/excitement/experience one would get from a non-platonic kiss might affect one psychologically as well as physiologically . A kiss gives no benefit . Its not like medicine. The benefit I got from giving her a kiss was just to show to everyone that she is not really that ugly.

The sentence structure as you present it is awkward. Another interpretation could be: "The benefits of a non-platonic kiss can include one's own psychological and physiological well-being."