Checking (blocking with the legs) is the safest and most effective way to block circular kicking techniques that target your legs or torso. Checks can

The axe kick is a downward strike used to attack horizontal targets in a 12-to-6 (hands on a clock) motion, often passing entirely over top

The Hook, also known as a round punch, is a powerful circular punching technique used to strike your target from an angle. There are numerous