Just this past summer I ran carnivore and Arnold mass for a month and half each. the results from carnivore were: bloating, stomach pain, dizziness! I would not recommend this product to anyone, but on the other hand Arnold mass was a easier on the stomach, lil bloat, and no dizziness. out of the two I would go with Arnold albeit I stopped since trying and sticking w a shake made from scratch that tastes great and makes me feel awesome from the whole food nutrients!!!!