sorry but this be a great idea , however it should come in different weight size etc. . its very light weight . I really would have use it if it would have be heavier . HOWEVER for those just start out exercise and need to build up , its a great toy to burn some calorie . it shake with ease and there be alot of arm position you can use to start . they just need to make some adjustment for more muscle building . I guess you can use this to practice you grip control on a spouse , but hey I have a headache !