For fun I decided to post these cat / exercise videos I found. While not particularly instructive, they are certainly motivational and fun for anyone out there who wants to exercise and happens to have a cat laying around the house.
You can do a variety of exercises with your cat - including push ups, squats, and even yoga.
Or even weightlifting. Although I admit it really depends on how big your cat is - or whether you have multiple cats. In theory if you had two cat baskets you could lift the cat baskets like you would dumbbells. Note - The Arnold lifting cats GIF is just for amusement! Don't do that with real cats!
YOGA WITH YOUR CAT