HUNTERSVILLE – Beginning Feb.18 at 4 p.m., Thor Colberg, owner of Thor’s Elite Fitness in Huntersville, kicks off the Your Best Body Challenge to help local residents transform their bodies in eight weeks, free of charge. Participants are asked instead to make a one-time $10 donation to Backpack Buddies. Colberg’s challenge is part of the fitness and weight loss contest phenomenon started by the hit TV show, The Biggest Loser. Anyone 18 and older is welcome to participate, and Colberg said he wants as many participants as he can get. More details on the challenge and how to register can be found at www.thorselite

fitness.com.