Am beginning my fast at midnight tonight. I am 5'7 and weigh approx 145. I will have an accurate starting weight in the a.m. I am 39 and my 40th birthday is coming up June 17th. Not sure how long the juice/water fast will be this time- longer than any others, though. I'll let my body decide but I'm thinking 15-21 days, at least. I'm very happily married with 4 kids, none of which really see the point in fasting so it's going to be another long, lonely journey! Will keep you posted daily.