
Alternate right and left strikes for 30 seconds. Stand up straight and rest for 30 seconds. Then repeat the exercise three more times.
This drill is great for shoulders, arms, abs, and legs.
INSTRUCTORS TIP:
"To avoid injury, stop every strike just before your arm straightens completely (Only extend 95%) keep a slight bend in your elbows and knees. And for added power and core strength, beath out during the moment of impact every time you strike down.