The actress was released from a Malibu rehab facility in December and attended Miracles, an intense fitness boot camp in Utah this month before beginning college at the Fashion Institute of Design and Merchandising.
Miracles is in a live-in fitness camp where participants work out for 5-7 hours a day. Amanda arrived on Jan. 4 and spent a week at camp to reach her weight loss goal.
"She wanted to focus on her health and getting her body back in shape," the camp's owner tells People. "Her main goal was to lose 5 lbs. and she did."
Miracles costs $3,250 a week and Amanda made the most of her time there, according to the owner.
"She brought a lot of life to the program," he says. "She was really funny, fired up and open to anything."
Including snowshoeing! Amanda was front and center, leading the pack, as seen as in this photo above.
Keep up the great work!
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Gallery | Sweating With the Stars