At the risk of stating the obvious, everything done single-leg is equivalent to an overload of 100% of your bodyweight, along with recruiting more stabilizers.

At the risk of stating the obvious, everything done single-leg is equivalent to an overload of 100% of your bodyweight, along with recruiting more stabilizers. It's possible to move from an easier form (simple squat) to a harder one by progressively shifting weight on one leg at a time.