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Has he given up already?!

Khloe Kardashian woke up bright and early to squeeze in a workout in Studio City today, and although brother Rob accompanied her to the fitness session yesterday, he decided to sit this one out. We hope he's not losing his motivation!

The reality star is seriously dedicated to working on her bod, because she just returned from Florida and already she's back on the grind!

Is the Keeping Up with the Kardashians star trying to send a message to her brother via Instagram?

"At some point, you have to make a decision. Boundaries don't keep other people out; They fence you in. Life is messy. That's how we're made. So, you can waste your lives drawing lines. Or you can live your life crossing them," she posted on her account yesterday.

We guess it also could have been a message for her rumored to be cheating beau French Montana?