Logan hates tummy time. Sometimes I can encourage him by lying on the floor with him, my face in front of his and cheering him on LOL eg: "You're such a smart boy. What a cute and smart baby you are! You're doing so well, just a little bit longer. Wow look at how high you can hold your head up" I feel a little silly some times, but it's the only thing that works, otherwise he just lies there with his face pressed in to the mat and gets cranky.