its a plan where you do an onine questionairre (pretty thorough by all accounts) and their dieticians/nutritionists work out your optimum amount of calories per day, based on how much and how fast you want to lose weight. The minimum diet plan is 1200 cal /day

But theres not set eating plan its more like 'x amount of carb serves, x protien, y diary etc, with guidance around what is classed as a serve. So you eat what you want within the guidelines.

Im serioulsy thinking about tf for 4 weeks, then that one.