The three body types
The somatotype framework, popularised in the mid-20th century, sorts physiques into three categories based on bone structure, muscle-building tendency and fat storage. Almost nobody is a 'pure' type — you're usually a mix with one dominant tendency.
| Body type | Typical traits | Tendency |
|---|---|---|
| Ectomorph | Lean, narrow frame, long limbs | Struggles to gain muscle or fat |
| Mesomorph | Athletic, broad shoulders, muscular | Builds muscle and stays lean easily |
| Endomorph | Softer, rounder, wider frame | Gains muscle and fat readily |
How the quiz works
Each question offers options that point toward one of the three somatotypes — for instance, how easily you gain weight, your natural frame width, or how your body responds to training. The quiz tallies your answers and reports the type you scored highest in, along with the practical implications for your training and nutrition.
Because somatotype is a spectrum rather than three rigid boxes, treat your result as your dominant tendency, not a permanent label.
Training and nutrition by body type
Your body type is a useful starting point for choosing a training and eating approach — though consistency always matters more than your somatotype.
| Body type | Training emphasis | Nutrition approach |
|---|---|---|
| Ectomorph | Heavier strength work, limited cardio | Higher calories and carbs to support gaining |
| Mesomorph | Balanced strength and conditioning | Moderate, balanced macros to maintain |
| Endomorph | Strength plus regular cardio | Higher protein, controlled carbs for leanness |
Can you change your body type?
Your underlying skeletal frame — the width of your shoulders, wrists and hips — is genetic and doesn't change. But the parts of your physique that people most associate with body type, namely your muscle mass and body fat, are very much within your control. With the right training and nutrition, an endomorph can become lean and an ectomorph can build noticeable muscle.
In other words, your somatotype sets your starting tendencies, not your ceiling. It tells you which approach may need more attention, not what you're capable of achieving.
Body type vs body shape
Body type (somatotype) and body shape are related but different. Somatotype describes your overall build and how your body gains muscle and fat, while body shape — hourglass, pear, apple and so on — describes the proportions between your bust, waist and hips. If you're more interested in how your measurements compare, try the body shape calculator instead.
It's also worth knowing that somatotyping is a popular, practical framework rather than a precise science. Use it as a helpful guide for structuring your training and diet, not as a strict rulebook.