Kourtney Kardashian Recruits Her Adorable Son Reign as Her Fitness Helper

The 37-year-old reality star uses her son to get into shape.

The family that works out together, stays together.

Kourtney Kardashian
is one fit mama, and now her kids are getting in on her exercise routines too!

On Saturday, the oldest Kardashian sister decided to make her work out a little harder by adding her son, Reign, as an extra weight while she did plank push-ups with a the help of a trainer.

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The 37-year-old reality star posted an adorable Snapchat video of herself and her youngest child getting into shape together.

Kourtney rocked an oversized sweatshirt and yoga pants while Reign opted for his comfy pajamas as he enjoyed the ride.

Reign wasn't the only one of Kourtney's kids to workout with the Keeping Up With the Kardashians star and her sisters. His big brother Mason got in on the action as well.

In another snap, you can see the six-year-old wearing white jeans as he did mini workouts while Aunt Khloe Kardashian finished up her crunches.

RELATED: Kourtney Kardashian's Son Reign Interrupts Her Workout

Kourtney doesn't let anything get in her way these days when it comes to fitness.

Whenever she can, the reality star is at the gym or doing some sort of physical activity with her family – and posting photos to prove it.

The mother-of-three did however, take a break recently from her regular schedule when she traveled to London in earlier this month.

While Kourtney was across the pond, she met up with her longtime friend Lindsay Lohan. The friends took to Snapchat, hung out together and even swapped dresses for a night. Check it out in the video below.