it really depends how you lose the weight, and how old you are, Im 35, i have lost in total over 7stones from my biggest weight, and my arms look good, i have been intensively training at the gym and doing weights, so it is possible to tone arms, but you have to put the work in. I did SS for three months and lost two stone, down to 17stone4, i have been on 1500 since end of january, and have worked out solidly since then, i am 13stone9lbs now and have little flabby skin