>> how was it? >> it was well worth it. tired. >> it's an amazing thing. i almost died a few times i felt like. it was so good at that. . it feels great to finish. >> hey, everyone, 1, 2, 3. >> wow, so this weekend, go inside the training of the fit nation squad. experience the triathlon threw a their eyes, learning their fears, their concerns. it's sanjay gupta m.d. jackie is in the best shape of her life. you're running 10ks. >> whatever. that's so not it. we did a little muddy buddy race and it was like six miles.