. >> ricky barons is sparchlti ieg with the new technology. marking six points where the body bends on the swimmer -- the wrist, shoulder, hip, knee, ankle, and toe. the software connects the dots. >> we have the kick frequency. we have the kick depth. we have the kick rate. this is really going to help usa swimming to help determine what makes a great dolphin kick. >> what swimmers wear affects their aerodynamics. and this year, it's evolved even more. >> the more fabric you can put on the human body, the faster it's going to be. the whole idea from a fluid dynamic perspective is to keep the body as uniform as possible. kind of like a torpedo. >> incidentally, the same goes for track and field athletes. >> we added texture to the suit to make it faster. so if you look really close, there's dimensions to it, texture to it. so it turns out smooth, does not equal fast. shaves off 0.023 seconds. this is not just a difference between first and second place. this is the difference of being on a podium or not. >> we've got more olympics ahead. we're

after winning gold swimmer ricky barons couldn't wait to break training, tweeting this message of his meal, a fast-food feast. britain's tennis star andy murray is sharing his medals with maggie may and rusty, his border terriers. 17-year-old missy franklin plans to commemorate her gold with a tattoo of the olympic rings on her hip. and if you're the youngest u.s. olympian to win gold? what do you do? 15-year-old katie ledecky is celebrating back home with family and friends. at the airport she was greeted with a hero's welcome from her maryland classmates. a teenager celebration for the ages. and with athletes finishing up competition each and every day, there are no signs of the thriving night life here in london will be slowing down. savannah. >> just getting started. ryan, thank you. there is much more to come from london including a defining moment of these games. which olympic sport will matt and al try this time and will spandex be involved? all will be revealed. but first, this is "today" on nbc. >>> just ahead, it was a tough night for lolo jones. she came up short in her bid