I'll go through phases where i'll eat the same foods for weeks and then totally change it up - i.e I might eat steak and mushroom sauce for dinner every night for 3 weeks - then I'll eat chicken and salad for 2 weeks - I do this with all my meals - I guess some people as "phase" eaters where they can eat and enjoy the same foods for an extend period but I agree with [MENTION=895]Shrek[/MENTION]; you will need to change it up at some point or you will get bored as shit....be it changing it everyday, every few days, every week, every few weeks will depend on the person at hand....for me its about 3 weeks and then i'll phase into something else with the same structure of diet though - I dont do this on purpose I have just always done it - be it eating clean or not.