My nephew Jayden is an explorer: he loves rolling over, looking around, playing with toys, and crawling (well, more like scooting, to be honest) around on his tummy. This was not always the case though! Initially, he HATED being put on his belly. I guess it’s understandable; all he could see was the blanket underneath him, and he was still developing the muscles needed to lift his head up and balance on his arms and legs. Once he got more practice, he got the hang of it though! While it can be uncomfortable for babies, tummy time is essential for muscle development. As always, make sure tummy time is spent while the baby is AWAKE—when sleeping, infants should always be placed on their back. Read this article by Tonya at Therapy Fun Zone for an explanation, as well as tips to make it easier:
When a baby is born, they have been all curled and flexed up in the womb for months. When they come out, their muscles are still in fetal flexion and it takes time for them to stretch out those muscles. Tummy time does not have to be forced, and it does not have to be painful (for anyone) but it does have to be done (and is likely being done without your knowledge). When you lay or sit on the couch with your baby on your chest, that is tummy time. When you hold your baby in the football hold (which many babies prefer), that is tummy time.