Kelly Rowland revealed her secret of how she lost 70 pounds in four months after delivering her baby boy.

"Jeanette Jenkins is the secret, SoulCycle is the secret, Angela Davis... when I go in there and it's the wee hours of the morning she is a great secret, so motivational," the former "Destiny's Child" singer told Extra TV. "Jeanette comes in with so much energy and this huge smile on her face and you can't help but to get excited about working out."

Watch her spill more of her fitness secrets in this video: