Everybody have different opinions about what we call a sport. Some say it's a physical exercise and doesn't have anything to do with mental exercising. Others believe that mental games are sports as well. Example of mental games are: poker, chess etc.
Personally for me, sports means physical exercises and I say "No sweating - no sport". Finland is the country with the most uncommon types of sports practiced. Its sports can even be called exotic. I think we should make a clear distinguishing between sports and entertaining games, otherwise chaos will appear in sports.