Tracey Yukich went through quite a scare after signing up for season 8 of The Biggest Loser in 2009. Yukich, a mom of four, started gaining weight after becoming pregnant and struggling with depression amid her then-husband's deployment. Ultimately, her weight gain led her to go on The Biggest Loser, but things took a turn during the first challenge when she experienced a medical emergency. The contestants were driven to a beach where they were told they had to run a mile to decide who would officially be on the show.