How thin of a line to walk?

[G2]

Most people say a leaning cycle is more about caloric intake than the drugs your taking. So how low of a calorie/protien daily intake can you go before you are sacraficing muscle gain?

 

[DirkMoneyshot]

Different for everyone - Also it adjusts the longer you diet. Your body gets used to the lower kcal amounts.

As for protein - I wouldn't go lower than around 1g / lb LBM.