Medically reviewed by Mallory Christopherson DC, FMT, CSCS Body types are categorized as ectomorph, mesomorph, or endomorph.You may have a high metabolism and need more protein if you are a mesomorph.

If you are an ectomorph, you may struggle to gain weight due to your fast metabolism. People with an ectomorph body type should follow a high-protein diet with balanced carbohydrates and fats. You can ...