A three-month-old baby’s head should be able to stand up, but I often hear parents complain that their baby’s neck is not hard enough to stand up. Is there a good way to exercise the strength of your baby’s neck? The answer is yes – let your baby lie on his back more often and practice the action of lifting his head. The method is this, let the baby lie on his back, in front of the toy to tease him to lift his head, time and interval gradually, from a short time to start, and gradually increase the practice time. Lie down is the basis for crawling, lie down well, hands and neck strength are good, later crawl will be fast.