Why is this the answer?

The answer is shoe because this is a super clever riddle that uses playful word pictures to describe an ordinary thing you wear on your feet every single day. Riddles are fun because they use tricky language to make us think about common objects in a brand new way, as if they are acting like people or animals. Let us look at the three secret clues to see why the answer is your shoe. First, the riddle says, "What runs around all day." Of course, your shoes do not have their own legs, so they cannot really run by themselves. But think about what happens when you put them on! Your shoes are always with you, joining in on all your adventures. When you run across the playground during recess, your shoes are running, too. When you walk around the house or the neighborhood, your shoes go everywhere you go. So, in a fun, riddle-like way, your shoes are "running around all day" with you. They carry you through all the walking, jumping, and playing until the day is done. Second, the riddle asks, "Then lies under the bed." Once your busy day is over and it is time for you to go to sleep, you take your shoes off. Many times, kids just kick their shoes off, and they often slide right under the bed or end up piled up on the floor next to where you sleep. They get to rest there all night long, patiently waiting for the next morning to start running around again. Finally, the most creative and tricky clue is, "With its tongue hanging out." This is the part that plays the biggest word trick! It is not talking about the tongue of a dog or any other animal. It is actually talking about the part of your shoe called the tongue. The shoe's tongue is the piece of soft material that is underneath the laces. Its job is to protect the top of your foot and make your shoe feel comfortable. When you loosen your laces and take your shoe off, that piece of material often flops or hangs loose and sticks out of the shoe, just like a tongue might hang out when something is tired. All these clues fit together perfectly to describe your trusty pair of shoes.