For years, Bob Harper and Jillian Michaels appeared to have great chemistry onscreen while filming "The Biggest Loser" together. But a new docuseries about the NBC weight-loss competition has fans wondering if the dynamic duo actually got along in real life.

Jillian Michaels addresses claims in Netflix's tell-all 'Biggest Loser' docuseries and shares a text message with Bob Harper

'Biggest Loser' Trainer Bob Harper Celebrates 60th Birthday: 'I’m So Lucky' originally appeared on Parade. Fitness icon Bob Harper knows how lucky he is to be alive on his 60th birthday.