Which option is not a healthy practice? calorie restriction eating low-fat foods omitting carbohydrates small, frequent meals

The answer is: Omitting carbohydrates.

Explanation:

The elimination of carbohydrates in our body is harmful and not healthy. First, the body will convert muscle mass into a source of energy (catabolism). This means that even by consuming large amounts of protein, the body will reduce muscle mass by providing a source of glucose.

It is true that protein consumption will increase muscle mass, but the only way to build muscle is when there is a source of carbohydrates.

The answer is: Omitting carbohydrates.