I took mine first thing in the am and fast until lunch. I have only done it 2x for 6 months each. I did PM before bed the first time but I always eat late and I think carbs blunt effects so AM was best for me. I got down damn close to single digit BF and looked great. Wish I could afford another 6 months, or i wish i could justify spending it as I could but aesthetics are not important to me now.