Everyone responds different, and you gotta find out what works for you... learn your body... if you've been serious about diet, and training naturally, you should know how you react to foods by the time you decided to cycle...
I dunno... I am natually ectomorphic (small joints, rib gage, long assed arms/legs etc...), which makes for longer muscles... this means that they have to gave a lot more girth to look big... I gotta eat like a bastard... I fart, and burn 500 cals... the problem is... paking a lot of food into a small body is a task... so I drink a decent portion of my meals... the bonus is that 20 minutes 3x a week of cardio WITHOUT a diet change will cut me to bits...