the feeling of hunger is often confused with thirst.
also he might want to up his lemonades as he may need more calories being a guy.

also..i dont know if he understands the difference between cravings and hunger. us chickies are more in tune with that (thank you very much mr.pms monster hee hee)
cravings are a normal part of the detox process.

I can relate to actual hunger. It was driving me insane around day 17 and that was one of the reasons why I switched over to a juice fast which is agreeing with me a bit better. 6 Lemonades is definitely too little - he needs to increase that and in between have a spoon full of maple syrup or blackstrap molasses. Then it gets better.

A growling stomach kept me from falling asleep quite a number of nights during the Master Cleanse.