Hm, not under-rated to this viewer:
They are very good at what they do. My question is why do they do it. For the exercise I suppose.
Um, did it occur to you that maybe they do it because it feels good?
I love to dance. I wish I could get over my fears of being told I’m stupid and too old to do that sort of thing.
Well, that makes sense.
my guess is, because it’s fun. i wish i could do that, but i’d probably wrench my back, lol.
Oh dear, I forgot how good the sound is on my lappie-cam! Turn volume down, but not all the way (unless you like loud, then turn it up to eleven, by all means!)
Gotta love the classifications that Amazon’s recommendations feature comes up with sometimes…
Cultural appropriation!
how do you use your sponges? cleaning!?
I’ve eaten matzos as snack food.
Well, sure. And I’ve used a jam jar as a hammer, or a screwdriver as a can opener. But… 
Peanut butter on just about anything (edible) is good.
Sponges are not edible.
Not with that attitude they aren’t.
With the right ratio, peanut butter can make a sponge edible