Not even aerobic exercise. Aerobic exercise is an uninterrupted exercise in which muscles participate for more than 20 minutes. Skipping rope is barely enough. Don't take yawning seriously. Yawning is an instinctive reaction of the human body. It is not controlled by human will, just like heartbeat and breathing. It has a good protective effect on protecting brain cells, increasing oxygen supply to brain cells and improving human stress ability. Understand? Come on!