The concept of "Fit for Life" originated in the 1980s in a book by Harvey and Marilyn Diamond. These two were firm believers in food combining. Food combining claims that, when mixed, certain foods are very hard to digest. The intestinal tract has problems absorbing certain mixes. Hence the food just becomes fat.

What’s on the Fit for Life Diet Menu?

While on the Fit for Life Diet, you should eat fruit from the time you wake up until noon. This helps the system purify itself. You are not allowed to mix the fruit with any other types of food however. You have a choice as to what you can eat for lunch or dinner. One meal could be an all carb meal including grains, beans and veggies. You may also have a protein meal with some vegetables. However, you should never mix starch with protein.

Does Fit for Life Work?

The Fit for Life Diet theories are, for the most part, unsupported by scientific data. The idea of food combining has been around since the turn of the century and is relatively outdated. The diet can also create vitamin insufficiencies, so dieters should be aware of their food intake.

	Fit for Life is outdated. As an alternative, customize your diet plan to your life. eDiets has a plan exactly like this where you input the key factors in your life and eDiets customizes a diet specific to your needs. It's called the eDiets Weight Loss Plan. More on these diets below...