Place one foot on the top of the bench behind you. Holding dumbbells, drop down into a lunge so that your knee is just above the floor. Drive up through that front heel using your glutes, hamstrings and abs.
Courtney’s tip: “When you go down, you don’t want to collapse over your lead leg. If you lightly raise your front toes on this exercise, it will force you to keep that weight on your heel.”