Or those same germs can make you sick by hitching a ride into your body each time you touch your food or put your hands in your mouth. Think about how many foods you eat with your hands every day. That's where hand washing comes in. Soaping up makes germs sorry because it rinses them away. When germs go down the drain, they can't make anyone sick.
Warm water is better at killing germs.
But be careful you don't burn yourself with water that is too hot. Use whatever soap you like. Some soaps come in cool shapes and colors or smell nice, but whatever kind gets you scrubbing is the kind you should use. Antibacterial soaps are OK to use, but they're not necessary for getting rid of germs. Work up some lather on both sides of your hands, your wrists, and between your fingers.