He appears on the American television series The Biggest Loser.
On September 8, 2015, Harper was announced as new host of The Biggest Loser, succeeding Alison Sweeney.
"When I came out -- when I was 17 years old -- it was one of those things where I realized that there was going to be so many obstacles, but being gay doesn't mean being weak.
And being gay doesn't mean that you are less than anybody else.
They’ve got to know what’s going on in the world.” And Ryan Gosling look-alikes are welcome — he reveals that Ryan is his celebrity crush, adding with a laugh, “I’m so gay right now!
” The Nashville, Tennessee–born fitness guru shocked and delighted fans when he was inspired to reveal he’s gay — on air — by a competitor struggling with his sexuality.
So did Bob go on a ton of dates after his big on-air moment?
He and Jillian Michaels served as coaches for a group of extremely overweight individuals seeking to turn their lives around.
"It's just who you are."In February 2017, Harper revealed that he had suffered a heart attack while working out.
He was hospitalized for eight days, and told heart issues run in his family. Despite his hectic schedule, he still finds time to teach exercise classes in the area.
Actress Jennifer Jason Leigh was one of his first famous clients.
He met comedienne Ellen De Generes at a party, and began working with her as well.
Harper has spoken out against puppy mills and has adopted a black and white dog from the Animal Advocates Alliance in Baldwin Park, California.