Examine.com is a great resource. I coach myself and other bodybuilders/figure athletes on the side, consider this anecdotal. Working with the extremes of muscl

Examine.com is a great resource. I coach myself and other bodybuilders/figure athletes on the side, consider this anecdotal. Working with the extremes of muscle mass I've found that it can affect metabolism a great deal. Simply by the fact that you have so much more weight to carry around/maintain. For example, I maintain weight at 205lb @ 5'7" (relatively) lean at 3500 kcal, for a competition I have to be ~170lb, my maintenance intake at that weight is closer to 2000kcal. Note that exercise also increases closer to a competition, so that 2000kcal maintenance is with higher activity levels than offseason.