Page 209 - Complete Krav maga : the ultimate guide to over 250 self-defense and combative techniques

2. Punch out and upward, rotating your left shoulder inward and upward. Keep
your elbow close to your body at all times. Do not drop your hand down to your
waist—this would expose you to a counterpunch. As your punch rises toward the

target, drive your legs upward as well, adding power. Just before contact, rotate
your fist so that your palm faces back toward you, which adds torque to the
punch.