An American personal trainer and author, Bob Harper is known for appearing as a trainer on the NBC show The Biggest Loser. He has been associated with the show since 2004, and was announced as the new host, after Alison Sweeney. He has also made appearances in the DVDs launched by the show. In 1999, Harper was cast as an extra in Melissa Etheridge’s video song. Apart from his association with television and writing books, Harper teaches and works as a yoga instructor. In his classes, he inspires people to wear gym clothes that are high in functionality and comfort. He prefers wearing simple and modest t-shirts and pants with varying lengths. He can be spotted in grey t-shirts a lot teamed with black shorts. His website, mytrainerbob.com allows subscribers to talk about weight loss and get coached by Bob Harper himself.