Is the physical experience of behavioral addiction the same as the physical experience of substance addiction?

Is the physical experience of behavioral addiction the same as the physical experience of substance addiction?

Marc Kern (Addiction Expert, Director of Addiction Alternatives) gives expert video advice on: How is a behavioral addiction similar to a substance behavioral addiction?; What is an "addictive personality"?; What can be done about an addictive personality? and more...

Pharmacologically, biologically, it's exactly the same with substance versus a behavior. One is just with the outside substance; the other one is sort of part of the process, part of doing it over and over again. There is a reward in it. People do not do things if there's no reward in it unless they feel better after it's all done. Like video games, it's fun. What's fun? A feeling.