Many resistance training exercises can be done both seated and standing. Doing any exercise seated supports the back and allows the exerciser to do the exercise without rocking, swinging, using the back, using the legs, or using momentum to move the weight. While seated, the exerciser can concentrate on form and using the intended muscles to move the weight. Think about sitting for the exercises that can be done seated. It is a great way to concentrate on form and really work your muscles without cheating. Many upper body exercises, especially those using dumbbells and barbells, can be done seated as well as standing.