But a lot of them feature gym balls. And I have a past with gym balls. I have owned them. I've even used them with Smiley. And when you work out what to do with them, they seem quite effective.
But I have a problem with gym balls. They're large, round and slippery. So when you've finished your little fitness routine, what then? Where do you put them for all those hours when you're not actually using them?
Put them on the floor and they slide everywhere.
Put them on a shelf and they roll down.
Pu them in the attic and they get covered in dust.
Put them in the garage and you forget all about them.
So how do you store them?
Are there giant boxes that keep them tidy? And take up half a room...
Are there rapid inflate/deflate balls that can be squashed flat and shoved in a drawer.
Or do you just stick a very large pin in them, and chuck them in the bin?
Sorry ball, you had it coming.