after experiencing a heart attack last year due to an 80% clog in an artery Doctors refer to as the widow maker and now being on statin's , i was still feeling sluggish. So I decided to do some research of my own and already being a customer of Advanced Bionutritionals , i decided to give CircO2 a try. To my surprise , i almost immediately felt a surge in my energy levels. My workouts have become more productive and my recovery times are shorter. My blood pressure is now 127/78 and i,m feeling a reassurance that there wont be another attack. Thanks Advanced Bionutritionals