Movement

Hourglass Stance. Occurs when you your rear foot is up on the toes.  It happens at the tail end of your cross. This is a dangerous but a necessary position to hit with power. Be ready to duck and cover. You should be ready to stay low and elbow block, weave under, or jab to correct your posture. Do not just stand there fully extended with nowhere to go.

In your stances and movement, do not put more than 60 percent of your weight on either foot (except in brief extreme situations).

One-legged stances, stilted, and straight knee stances, overextended forward stances, etc., are a big mistake both offensively and defensively.

Do not dance around, or bounce up and down. Quick, short, even-keeled adjustments are what you want.

Stay on the balls for quick range adjustment, but settle into your punches. You get your punching power from the ground, through the legs, and off the hips.

When boxers step in to fire a combination, they often duck downward as they finish the last punch. In the martial arts this may become a problem since it exposes the head to a grab and subsequent knee to the face or chest.