In general the three different body types are: ectomorph, mesomorph and endomorph (or ‘I’, ‘V’ and ‘O’ types). And each of those has their own typical characteristics that can help you determine which body type you have.

In this post we’ll tell you a little bit more about what to eat according to your body type.

The I-type or the Ectomorph

Typical Characteristics of the Ectomorph are:

  • Long and lean
  • Delicate frame
  • “Hardgainer” – Finds it difficult to build muscle and fat
  • Body similar to a marathon runner
  • Fast metabolism



I-types (Ectomorphs) may be taller and long limbed and they tend to prefer endurance activities and /or sports where a good strength to mass ratio is important.

Their engine is high revving and they typically have a fast metabolic rate.

I-types (Ecotmorphs) generally do best with more carbohydrates in the diet along with moderate protein and lower fat intake.

A nutrient distribution for this body type might be around 55% carbs, 25% protein, and 20% fat.

The V-type or Mesomorph

Typical Characteristics:

  • Middle of the body types
  • Can be lean and muscular simultaneously
  • Natural athletics build with well-defined muscles



V-types (mesomorphs) have a medium size bone structure and athletic body, and if they’re active, they usually have a considerable amount of lean mass.

Their bodies are designed to be powerful machines and the excess calories often go to building muscle, strong connective tissues and dense bones.

V-types (mesomorphs) generally do best on a mixed diet, with balanced carbohydrates, proteins and fats.

A nutrient distribution for this body type might be around 40% carbs, 30% protein, and 30% fat.

The O-type or the Endomorph.

Typical Characteristics:

  • Stocky build
  • Wider body
  • Stores fuel (both muscle and fat) in the lower half of their bodies
  • Has more muscle as well but usually, this comes with more fat
  • Has the best strength advantage out of the three different body types but may find it difficult to stay lean
  • Slower metabolism


O-types (endomorphs) have a larger bone structure with higher total body mass and fat mass. They typically have a slower metabolic rate and generally don’t tolerate carbohydrates as well, particularly if they are sedentary.

O-types generally do best on a higher fat and protein intake with carbohydrate intake being lower.

A nutrient distribution for this body type might be around 25% carbs, 35% protein, and 40% fat.

Can You Be a Combination of Two Body Types?

Absolutely! When it comes to these three different body types, there is no one-size-fits-all. You can be a combination of two, sharing characteristics from both. Hopefully, this post has given you the information you can use to help identify your body type or see if you share traits from two.

Nutrition, of course, is a very complex subject and this overview is just a tip of the iceberg. If you are interested in learning more, have a chat with Coach Peter

Author: Peter Koopmans