10 Best Muscle-Building Leg Exercises

What separates a good leg exercise from a great one? Check out our top picks for leg day!As much as you may have wanted to see them here, leg extensions and curls didn't make the cut for this list of the 10 best leg exercises. In fact, while they can be useful toward the end of your workout, they probably aren't even among the top 20, because single-joint moves just don't deliver much bang for your training buck.Across the board, multijoint leg exercises top this list. In addition to recruiting