Rob Kardashian took to Instagram Wednesday morning to post what he calls a "motivation time" picture.
Kardashian stepped out in May to debut his Arthur George sock line, and also his major weight loss. He credited his initial weight loss with a strict diet and two-a-day workouts.
On "Keeping Up With the Kardashians" last season, he said that he gained nearly 40 pounds while dating Rita Ora.
He also revealed his "little problem" as a result of weight gain: his supposedly shrinking penis. The upside? "Every time you lose 10 pounds you gain an inch on your penis."
Here's hoping some things are shrinking while others are growing.
Also on HuffPost:
More:Rob Kardashian Lamar Odom Rob Kardashian Weight Rob-kardashian-weight-loss-photos Rob Kardashian Weight Gain Rob Kardashian
HuffPost Entertainment is your one-stop shop for celebrity news, hilarious late-night bits, industry and awards coverage and more — sent right to your inbox six days a week. Learn more