Hello cat lovers!

Two of my seven cats go crazy whenever I whistle, they have to rub on me and go nuts. I have looked for information about this without finding anything reliable or that satisfied my curiosity, so here it is.

Does whistling hurt their ears and bug them? So they come to make me stop...Or do they enjoy it so much they have to rub on me to thank me to add music to their lifes?

Thanks for your input!!!

Curious Kitty