Ketosis is a natural body process that begins as a result of carb reduction in the body.
When the body does not have a sufficient amount of carbs for producing energy, it will begin to use fats because they are the secondary energy source.
As a result, the fats will be used up from the body, making you slim and slender.
Normally, this process starts as a result of people changing their diet plans and only eating a lot of fats rather than eating carbs.