M Bites by Manila Bulletin: Barbee tries the 21-Day Keto Challenge Curious about Keto? Mbites by Manila Bulletin's Barbee Olaivar tries Ketos of Manila's 21 Day Keto Challenge - and loses 18 lbs in the process! Watch Barbee and her journey in this video. Mbites by Manila Bulletin March 28, 2019 Facebook Twitter