A Pilates Chair is one exercise equipment that allows you to do numerous fitness routines. One such exercise is called the mermaid which involves sitting sideways on the chair, and with one hand on the pedal, reach and press down, lifting your other hand sideways. As you press the pedal down, exhale slowly. Let your arm sink into your shoulder socket and inhale slowly as you sit upright again. This stretching exercise works your whole upper body. As you do the routine, you will feel the stretching along your side. The stretch runs along your ribs down to your hips.