- 1). Cut a piece of string to measure about 10 inches.
- 2). Tie the string around the penny a few times, making sure the penny is secure.
- 3). Lay down on your back. Hold the string with your hand over your stomach, with the penny pointing toward your body.
- 4). Analyze the way the penny is moving over your belly. If the penny moves up and down, your baby is a girl. If the penny moves in a circle, your baby is a boy.