Iowa native and Olympian Lolo Jones will be on The Biggest Loser Tuesday night.
The contestants left the ranch for Utah to train with a host of Olympic athletes.
Besides Lolo there will be other bobsledders, curlers and speed skater Apolo Ohno.
The contestants will train with the athletes and be challenged to run more than a mile up a bobsled track.
You can watch the show tonight on Channel 13 at 7p.m.