While this body type may struggle to shed pounds, a consistent caloric deficit (eating fewer calories than what the body needs to maintain its weight) diet, exercise, and willpower are key to dropping excess body fat, and achieving a fit body if that's your goal. Build Your Program: How to Design the Perfect Training Plan Ectomorph 0.00% The ectomorph body type has a tougher time trying to gain weight, whether in the form of muscle or fat, compared to the other two body types. While this body type may struggle to shed pounds, a consistent caloric deficit (eating fewer calories than what the body needs to maintain its weight) diet, exercise, and willpower are key to dropping excess body fat, and achieving a fit body if that's your goal.