Dont follow a set "diet" per se - but during Monday - Friday I will pretty much eat the samethings week in, week out - Tuna, Chicken, Steak, Protein powder, veggies, nuts - this is 1. because I do like to keep things "clean" during the week but 2. I simply dont have time after work, gym, rugby etc etc to plan meals, good different things - its easy - straight forward and I know I am getting what I need.
During Saturday/through half Sunday I'll eat what I want and then cook a "semi-healthy" meal Sunday night - and then back onto it Monday.
Why I follow this - its easy, keeps things "healthy", I find its a good balance