Keto XP As a rough estimate, if you wish to gain weight steadily, you should aim to eat 300-500 calories more than you burn each day. It would not be wrong to say that being underweight is medically just as unhealthy as being obese. While most people are well aware of harmful effects of being overweight, they simply overlook or are unaware of the health risks associated with being underweight. Which foods are best for Keto XP on a Keto XP diet? As with most diets that drastically reduce or eliminate certain food groups, the Keto XP diet has been shown to aid in Keto XP. There are often claims about Keto XP diets being restrictive, but in many studies the people following those diets have a higher chance of completing the studies than the comparison groups (usually low-fat/high-carb diets).