I change the pads every month. This product complements your exercise program.I do the regular situps in the morning,wear the belt while I put on my makeup and do my hair.I have a hard time loosing wt. and this allows my stomach to look flatter. My jeans look great and no longer have low back pain because it helps abs be stronger. Between my Gazelle and this -I have a great looking body without the gruelling work. Low-impact exercise-can't beat it!! THANKS FOR SUCH A WONDERFUL PRODUCT!