. >> tiring jeffrey mathias is opening in december so you're not sleeping. >> not sleeping so let's throw in a spin class. >> the challenge, teaching a spin class. >> i'm concerned you're a closet spinner and you do this all the time, you're a pro. >> i'm afraid of falling off. my goal is to stay on the bike. >> let's get on and see what we can do. tiffany, blood, sweat up and down biscuits. >> that's right. we're here to work off the biscuits. bring it up, two, three, back down. big breath. >> jadiann: i feel like i'm in a real, legit spin class. >> worry about a girl with a dream in a ripped sweatshirt in a barbecue restaurant. one,. >> scale from 1-10, how's she doing? >> a ten. >> jadiann: you're her coach. >> i got this, girl. up, down, up, down, right, left, right, left. three, two. here we go. i was born this way. >> let's get a -- show me your favorite spin moves, all right? everybody go, go, go, you got to yell like she yells. >> go, go, go, go, go! back, two, four, two. i got you. i'm racing you. i'm racing you. light resistance, spread it out. this side, as heavy as you can go.