My weight can fluctuate 5-7lbs. day to day but my diet is strange compared to most:
My catch weight is 198lbs. - fight weight is 185
My diet is 300g/day protein mostly consists of lean meat,chicken breast,supplements and veggies. 120 oz. water per day. VERY limited sugars,salt, caffeine or starches.
Verylow carb intake for 3 weeks and then a 3 day carb binge in the fourth week
I supplement heavy with b vitamins,C and pollen to fight energy loss from the carb depletion. And I am of course hypo-gonadic so I inject 200mg of test into the bum as per doc's orders each week!