Kourtney Kardashian showed off her slim post-baby body on Sunday.
The 36-year-old reality star shared a photo of herself in black exercise gear on Instagram, writing, "Working out is one of the only things that helps when I'm feeling anxious."
The picture comes 10 months after Kardashian welcomed her third child, Reign Aston Disick, with then-partner Scott Disick.
The former couple are also parents to 5-year-old son Mason Dash and 3-year-old daughter Penelope Scotland.
The reality star posted a snapshot earlier in the day of herself cuddled up with Mason and Penelope in matching pajamas. Kardashian has been spending quality time with her kids since returning home from Lamar Odom's bedside in Las Vegas.
Odom, who remains legally married to Khloe Kardashian, regained consciousness Friday after being discovered unresponsive in a brothel Tuesday.
The 35-year-old former NBA star is improving and responsive, but will stay in an intensive care unit.
Kardashian is caring for her three children alone as Disick seeks treatment for substance abuse at a Malibu, Calif., rehab facility.
The reality star and her family came to fame on E! series "Keeping Up with the Kardashians," which will return for an 11th season Nov. 15.