Plate Overhead Lunge Walk

Hold a weight plate over your head.  
 
With your feet about 8 inches apart and your toes pointing straight ahead, step forward about 2 to 3 feet with your right leg.
 
Bend your right leg and lower your body until your left knee is about 3-4 inches from the ground, keeping the natural curve of your spine by tensing your abdominal and lower back muscles; your right knee should be about 3-4 inches in front of your right ankle.
 
Straighten your right leg and return to the starting position; repeat with the opposite leg.