Biggest Loser Health Tips

Alongside her mom, Bette Sue, 33-year-old Ali went on The Biggest Loser to discover the woman who was hiding beneath the extra weight...and she found her! Ali's tiny waist and toned arms wowed millions of viewers.

Six months after the big finale, Ali is still fighting to stay on track. "It's a journey. It really is," she says. "I choose every day. Every day it's hard."

Ali says she never really knew the woman she once was, and she's vowed to never lose herself again. "I just promised myself never again will I forget who I am and what I deserve to have...and that's health and that's happiness," she says. "That's feeling worthy."