The PhysioRoom.com Resistance Exercise Band. Exercise Bands by PhysioRoom.com are offered in three colours. Each of these colours indicates a resistance or elasticity of the band. Green is light, purple is medium and blue is heavy. These bands are great for strengthening the muscles increasing flexibility and for use as part resistance training. You can also secure the band to a door or to a sturdy column and use to target muscles in the back, chest, shoulders and arm. These multi-purpose bands are not only a great alternative to weights and pulley devices, they can also be tied at either end and used as an exercise loop. The bands are offered on a scale of resistance to allow you to gradually develop your fitness, be it for rehab exercises, training or general health. Once you become accustomed to a certain level of fitness, you can progress onto the next. So order your Resistance Exercise Bands from PhysioRoom.com today!