stress balls

Stress balls?! I do not have the slightest whit how to use them! Squeezing them only results in me clawing myself. Particularly if my nails are long, which is 70% of the time. I have two, one in the shape of a heart and one kidney (YES BODY PARTS but the heart is a typical heart). Squeezing them feels nice...until I feel my nails jabbing into my palm. Then it just becomes an annoying matter of trying not to squeeze without digging my nails into my palms. Aah.

I really do wonder if anyone else uses stress balls. I always believed that such "micro" physical relief only works for those who have already learnt restraint. But then I want to appreciate the gifts, so I feel I ought to use them......