Your baby may be strong enough to do a mini push-up when he's lying on his tummy now. As his muscles strengthen he will be able to lift his head and shoulders clear of the floor. He may also look around as he does so. You can encourage him by lying him on his tummy on a play mat for short periods each day. Gradually he will learn to transfer his weight from his forearms to his hands to lift himself even higher. Do remember, though, that this head-up position is tiring. He won't be able to hold it for very long at first, no matter how much he wants to see what's going on around him.