Start with 4 to 6 repetitions of each exercise and build up to 10 or 12. You can also add a second and/or 3rd set after a short (60-90 seconds) break. These exercises are to be done with a smooth motion and a moderately slow tempo.
Before you begin working out with your band, look it over closely -- then stretch it out to its full length and check it over again. If you see any cracks, tears, discolorations or any other obvious signs of wear, replace the band. Consult your physician before starting any exercise program.