Oh, my back!  Those were the words coming from my mouth the morning after a rather exhilirating half-hour on the Wii.  We purchased the Wii last year after my husband insisted that I would love playing the interactive games.  He also persuaded me by saying that we could use it to get in shape together.  I must admit that I am floored by the technology the Wii system implements.  It is so smart.  I know that may be the understatement of the year, but it's true.  But I have found at least one flaw.  After a few weeks of actively playing baseball, golf, tennis, and the others, my husband discovered that he didn't need to use a full swing to get an ace serve in.  In fact he didn't even have to stand up.  From the comfort of his lazy-boy, my husband has reached professional status in every sport. There are some other apparent flaws in the system.  According to a NY Times article, the number of Wii injuries in on the increase.  As more people purchase the Wii Fit package, doctors report an increase in sprains, stress fractures, pulled muscles, and other minor injuries.  Some people view these health "risks" as flaws in the system, but I think it is an encouraging sign that people are actually getting up off the couch (unlike my husband) and getting active.  Like any new fitness program, you are bound to feel the aches and pains the next day.