is taking his recovery "one day at a time."The Biggest Loser
host took to Instagram on Saturday to share a video of himself doing burpees, just three months after suffering a life-threatening heart attack.
Watch: 'Biggest Loser' Host Bob Harper
Shares Shirtless Selfie Following Heart Attack: 'On the Road to Recovery'
"Okay @crossfit @thedavecastro I'm getting closer to coming back," Harper wrote alongside the clip. "I did some burpees in my rehab yesterday to get a feel and see how my heart rate responded. The top notch team there kept a very watchful eye on me. One Day At A Time
. #heartattacksurvivor #beherenow."
Related: 'Biggest Loser' Host Bob Harper
Calls Out Haters One Month After Heart Attack
The 51-year-old trainer, who has been sharing his road to recovery with fans, opened up about his heart attack during an appearance on Watch What Happens Live With Andy Cohen
last month, revealing that he