Kourtney Kardashian

Stefan / AKM-GSI

There's no denying the fact that Kourtney Kardashian is in the best shape of her life, and she wants her fans to know exactly what motivates her to get into the gym every single day.

The Keeping Up With the Kardashians star spilled all about how fitness has helped her through some difficult times this year on her app.

"When I was pregnant with Reign [Disick], I knew that I was going to go hard at working out afterwards. I couldn't wait to feel strong and in shape again," the 36-year-old wrote.

"I didn't know that I would be going through a breakup and just an overall crazy year. Everyone deals with hard times in their lives differently. I'm generally not a nervous person but I get anxious."

The brunette has made a habit out of sharing Instagram pics from her workouts, namely sexy gym selfies showing off her toned abs, but also wants to give an honest look at why she's logging so many hours on the treadmill.

The mother of three shared that workouts help manage her anxiety, writing, "I try to exercise 5 days a week. My anxiety is always worse in the mornings so that's when I schedule my workouts. I usually start with a quick run or jumping rope to warm up. I have to do something fast to really kill [my anxiety]."

Lastly, Kourtney shared, "People are very quick to judge others by appearance but you truly don't know what someone's motivation is or what is going on inside them. For me, exercise is as much about my body as it is about calming my mind."

Make sure to watch Keeping Up With the Kardashians Jan. 10 at 9 p.m. only on E!

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