"Leg day"—the very phrase conjures up images of nausea, days of hobbling, and legs that feel like jello. The feelings may be universal, but bodybuilders looking to annihilate legs have countless workout options at their disposal. While most workouts start with some variation of the squat—widely acclaimed as the best lower-body movement—exercise choice, foot position, and advanced training techniques all allow you to emphasise one particular area of the legs over others.