Rachel Frederickson won The Biggest Loser Season 15 in 2014 after losing a staggering 155 pounds, dropping from 260 pounds to just 105, meaning she’d shed nearly 60% of her body weight over the course of the competition. When she stepped on stage at the finale, viewers, fellow contestants, and even the show’s trainers appeared visibly stunned.

Season 17 winner Roberto Hernandez lost 140 pounds while competing on The Biggest Loser. Hernandez was the last winner from the show’s NBC run. Today, Hernandez is still a high school teacher. He loves being a family man to his four kids and a husband to his wife, Rosie.

The Reality of The Biggest Loser' featured 'The Biggest Loser' host Alison Sweeney as she talked about her experience on the show.

The two fitness trainers starred for many years on 'The Biggest Loser,' which promised $250,000 to the contestant who lost the most weight

Back in 2009, Danny Cahill won $250,000 after being crowned the winner of The Biggest Loser Season 8. He lost nearly 240 pounds on the show. Cahill started the show at 430 pounds and was down to 191 pounds by the end of his journey.