. >>> seems like nowadays everybody's into the old crossfit. who is best at crossfit?t of the fit? they've been going down since 2007. they just finished up. july 22nd through july 28th, the fittest woman on earth, looking at her, she won the crossfit games this year. samantha briggs, 31, 5'5", 132 pounds. has been in the competition before. dealt with injuries. but this year, she took home first prize. just look at her. looks like she's carved out of marble. >> a heck out of a crowd. >> this thing grows every year, gets more popular as more people get into the whole crossfit thing. you can see amazing feats of strength from samantha. just as impressive as her, the guy who won this year, rich. check him out, 26, 5'9", 195 pounds. the third year in a row that rich has become the fittest man on earth or won the title of fittest man on earth. some of the stuff, this is what you have to do? you're like a dog in a dog sled here, pulling all of this weight. >> impressed by the cool gym equipment setup. a stadium full of neat obstacles and lots of it. >> at the end here, rich