Kourtney K talks reveal her source of 'mojo' to workout

Kourtney Kardashian, who now is in the best shape of her life, spilled the beans about the motivation she gets every single day to get into the gym and that's nothing but her anxiety.

The 36-year-old 'Keeping Up With the Kardashians' star wrote on her app that when she was pregnant with Reign, she got sure of going hard at working out to feel strong and get back her shape again. But what accelerated her motivation is the break up and post-breakup anxiety, reports E! Online.

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 is logging so many hours on the treadmill.