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.

Take a look around you and you’ll see an endless range of body types: scrawny, lithe, pudgy, toned – even Hulklike upper bodies paired with skinny chicken legs. We might tell ourselves we’re fitter ...

Medically reviewed by Mallory Christopherson DC, FMT, CSCS If you are an ectomorph, you may struggle to gain weight due to ...