Mekaela Davis, Heart Disease Survivor. Mekaela is a mother of four, tech industry leader, and fitness enthusiast that nearly lost her life due to a total heart blockage in her sleep. She had an implantable heart monitor tracking her heartbeat while she experienced the blockage. She had no idea it happened until 3 days later when her doctor saw the results (three day lag in transmitting the data). She was given a pacemaker to ensure a regular heart rhythm, but her heart coming back from that blockage is nothing short of a miracle.