I was on a keto diet for my last show, I did 8 weeks straight with only 2 refeed meals, I will say that it got me shredded but its a mindfuck at times, my body was making progress fast weekly, sometimes daily, but I had no pump whatsoever when training, if you can get past that part mentally, then you are golden, but my fats were high, lots of grass fed beef, salmon, avocado, brazil nuts, omega 3 eggs, mac nut oil.