I first get the shakeweight on 01\/3\/11 and have be utilize it 3-4 time a day . now I have be work out for year and have fall off the workout wagon for a few month now and think about get the shakeweight to help reignite my motivation and tone up my arm which be 16 inch but with no tone . now that I have get the SW , I 'll be change that . but , the SW would be most effective in it be include into one 's routine as oppose to do it solo . I have be do my bicep curl and tricep extension and hit the sw afterwards and with the dumbbell building , and the sw toning , you 'll get a good workout . I be sure after another week of this , I 'll be do the sw in rapid fire motion for a much longer duration gradually until the whole workout be all rapid fire motion . feel the burn ! feel the burn !