I had to have it 3 days before my surgery and it was a terrible experience for me but maybe it’s the person giving it that makes a difference? And btw I am 4 days post op and wish I had never got the bypass surgery, I am so sick and sore nobody tells you the aftermath of bypass surgery, I wish I could take it all back but what’s done is done, I wouldn’t advise anyone to have it, I thought I was at the end of my rope but I would gladly go back to a personal trainer and dietician to lose the weight it’s not worth it to me, please know the facts beforehand, I just pray I get better each day