Peace brenda's bug,
I did the MC for 10 days, and i continued to workout like i normally do during the 10 days. I never once felt deficient, deprived, or a lack of energy. A lot of that can be due to the nutrient content of the lemons, along w/ perhaps the syrup (or agave).
Doing a water fast is another story. I've tried even little, moderate exercise on a water fast and its difficult to recover after the workout, even if you may have the energy to actually DO the workout. But that's just my experience.
There shouldn't be a problem at all working out while doing the MC though.
Good luck on your journey..
"Why does he like the devil?
Because the devil planted fear in him when he was a little boy.
Why does he fear the devil now that he is a grown man?
Because the devil taught him how to eat the wrong foods." -A Student and a Teacher