this is a new and upcoming sport
http://www.trendcentral.com/trends/trendarticle.asp?tcArticleId=1026
2 mins of boxing then change clothes and play Chess for 3 mins then back to boxing....
http://www.trendcentral.com/trends/trendarticle.asp?tcArticleId=1026
2 mins of boxing then change clothes and play Chess for 3 mins then back to boxing....