I think I've mentioned it before, but for about a year, I've been doing a type of workout called CrossFit . I usually describe it as "circuit training on crack," because most of the work outs involve cycling through various exercises as fast as you can. I don't know how they always pick combinations of exercises that kick your butt, but they do. Anyhow, one of the things that the guy who got me started on it used to always say was, "a lot of the motions are directly applicable to every day life." I've never thought about it much, it was just some little tidbit of information I tucked in the back of my brain. Until today. I'm home sick today, so I get to see the little kids during the day. Well, they get bored after a while, so they usually ask me to play with them for a bit. One of the things they like to do is to have an adult "fly" them. Basically, you throw them up in the air a few times. I remember the first time I saw i...