Take your guard stance an arm's length from the bag with your hands wrapped and gloves on.

Throw a jab, pull it back, then fire a cross with your rear hand, rotating through your hips.

As you finish the cross, let your weight shift onto your lead foot so you're loaded for the hook.

Pivot on your lead foot and throw a lead hook in a short horizontal arc, landing with your first two knuckles.

Reset to your guard, breathe, and repeat. Add speed gradually, keeping each punch crisp.