As a supermodel, Kendall Jenner's full-time job requires her to be in tip-top shape. In fact, even when she's chilling, she thinks about working out. On her app, Kenny shared, "Sometimes when I'm watching TV, I think to myself, 'I should be doing crunches and sit-ups right now.' Then I get off the couch and do it."
The older Jenner sister apparently loves working on her abs of steel: "My abs are my favorite thing to work out. I love it when my trainer, Gunnar Peterson, kills my abs. The next day, it hurts to even laugh. That's how I know I'm doing the exercises right!"
But we all know that sometimes, we need a little push—even Kendall admits that she requires extra motivation. For when she's lazy AF, Kenny uses an app called Instant Abs Trainer. It's free, and it offers 100 ab exercises.
And, obviously, it works:
Follow Ysa on Instagram.