Maybe if you are on your way to winning Mr Olympia IF might slow you down, though I doubt you'd notice.

However, IF has proven health benefits, one being to give your body the chance to cleanse itself. If you are on your way to winning Mr Olympia my guess is that you are ingesting products that aren't necessarily fantastic for your health.

By practicing IF occasionally you will benefit from improved blood markers, for a start. You might lose a gram or two of muscle along the way but at least you will around a bit longer to enjoy what you've got.

I'm oversimplifying it slightly but in my opinion your health should come fairly high up the list.

Just my opinion and, incidentally, that of plenty of others . . .