Starting position: Stand with feet together, holding a dumbbell or kettlebell in each hand down at the thighs.
Procedure: Take a step forward into a lunge position. Bend both knees at a depth appropriate for your ability and needs. Push through the ground with the front leg to return to the starting position and repeat with the opposite leg.
Coaching Key: Keep your chest tall, weight primarily on your front leg, and prevent your front knee from collapsing inward.
Feel it: Working your glutes, quads, hamstrings, and calves.