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.
Body type is a starting point, not a diagnosis
A body type quiz is useful because it turns vague observations into a practical starting point. It can explain why one person needs more calories to gain size, why another gains body fat quickly when training slips, and why a third responds well to a balanced mix of lifting and conditioning.
It is not a medical test, genetic report or fixed identity. Training age, sleep, protein intake, total calories, hormones, medication, stress and consistency can all change how your physique looks over time. Use the result to choose the first version of your plan, then let measurements and progress photos tell you whether that plan is working.
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 |
How to use your quiz result
The best way to use your result is to make one or two plan choices, then track the outcome for at least four weeks. Changing everything at once makes it harder to know what worked.
If your result is ectomorph, the main risk is under-eating. Start with progressive strength training, a small calorie surplus and enough carbs to make workouts productive. If your result is mesomorph, keep the plan balanced and watch whether you drift toward overeating because progress comes easily at first. If your result is endomorph, prioritize protein, steps and strength training so fat loss does not come at the expense of muscle.
| Result | First priority | What to track |
|---|---|---|
| Ectomorph | Eat enough total calories to gain muscle | Scale trend, strength, arm and chest measurements |
| Mesomorph | Keep strength and conditioning balanced | Waist, photos, strength, recovery |
| Endomorph | Preserve muscle while managing calories | Waist, steps, protein, workout consistency |
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.