nervous as well, see if they can make it? >> i was surprised. i thought there was going to be more jitters this morning. i was down in the lobby around 3:45 with my flip cam, flip camming all of the participants as they came off the elevator and every one of them felt pretty good, woke up on time. it's a real process to get your gear ready, they were hydrating, already eaten breakfast so everyone felt and looked pretty good. we're expecting a lot from them. i think they'll have great times. >> sanjay, good luck to you, buddy. we're pulling for you, praying for you. if anything happens you can treat yourself, you're a doctor. good luck out there, buddy. >> reporter: right, dual role, that's right. thanks, t.j. see you at the finish line. >> good luck, our dr. sanjay gupta about to hop in the water, just 20 minutes away from his group starting out, we're checking in with him as he gets going. "fit nation" and taking care of yourself and your body on national ice cream day, there is