By Gabrielle Olya
Updated November 10, 2016 10:05 AM
Credit: Source: Khloe Kardashian/Instagram

Khloé Kardashian works hard for her toned physique, but not all of her sisters are as disciplined about hitting the gym.

“Some of my sisters are more motivating than others,” Khloé, 32, writes on her website.

“If you follow me on Snapchat, then you probably already know that Kourtney is my main b— when it comes to exercise partners,” she says. “She’ll try everything and do her best without complaining.”

Kendall Jenner is also “a really good fitness partner because she’s super athletic,” says Khloé.

“She has her dad [Caitlyn Jenner]’s body so it doesn’t take a lot for her to get in shape. She doesn’t do a ton of cardio but she does weights. Kenny’s also really quiet when she works out, which is funny.”

WATCH: How Khloé Kardashian Dropped 35 Lbs.

While Kim Kardashian West has successfully dropped her baby weight, Khloé says she actually isn’t big on working out.

“Kim has the best body but she doesn’t work out a lot, so it’s just like a half-ass weird thing when we’re exercising together,” she says. “We’ll literally both be on treadmills and I’m sprinting and she’s texting next to me. Also she doesn’t sweat, she just glistens!”

According to Khloé, Kylie Jenner also “doesn’t really work out.”

“She did come with Kourt and me one time, when [our personal trainer] Don was training us,” she says. “Don does four quarters in each session and Kylie only stayed for one quarter.”