Thank you for participating in this forum - it's been very helpful to me. I did the Master-Cleanse last August for 10 days, and will begin again this Saturday for 10 days. This time, however, I will be teaching fitness classes 6x week at the gym, and I'm concerned that it may be too taxing on my body. In August, I exercised lightly (walked on the treadmill very slow). Does anyone have experience with exercising while doing the MC? I remember last time I felt slightly dizzy towards the end of my fast.