how many lemonades have you had?
what about water?

toxic elminations at the end? you are getting rid of it the whole time. usually its easier the longer you are on it because there is less to push out of your system.

I don't think protein(here we go...) has anything to do with it.

The symptoms are normal, yet there are a couple of things I would want to ask.

Are you eliminating regularly. The cleanse is just that , a cleanse, you are
accumulating toxins that MUST be eliminated. If you are not getting good results
from SWF (Salt-Water-Flush) or laxitive that is a consideration because the toxins will drag ya down.

Also, are you on the Master-Cleanse to lose weight? Are you taking less that 2 tablespoons of
maple syrup in the Mc cocktail. So many of us want 'quick' results that we cut down on the maple...don't if you feel weak.

Are you using naturl ingredients,ie, organic lemons, natural non-irradiated cayenne,good syrup? If not, then that would cause problems ,too.
With the lack of food intake, your body is absorbing and trying to utilize the litte we are fueling it with right now. Lousy ingredients will give lousy results.

a full strength cocktail yields about 110 calories...remember that ...if you sit and watch tv you are burning 40-50 calories an hour, playing cards 110 per hour...so figure it out. If you're working, walking (500 calories an hour),etc..
then you are running thin on fuel. You will feel week...

Just my two cents...

aloha...d