From the Desk of King Otto:
I spend my days outside. Not only is it an easy way to stay in shape, but I am able to explore my kingdom, protect it from other felines, and grab nice lunch of skink and insects. There is so much more to be gained from being outside than these tasks, something fundamental and essential to life in the communing with nature.
As a house kitty, I am cuddly and loving. I even find that sometimes I reduce myself to responding to human commands when cheese is present. After a couple days inside, I am likely to loose my identity as a cat. I am a hunter, a predator, a KING after all. Not some simpleton begger, reliant on tricks to impress the human into feeding me. When I am outisde, I find the hunter within me and let him free to prowl, capture, and sometimes play with the creatures that trespass into my kingdom.
Staying fit is all good, but strength requires flexibility. I have tried to find a way to stretch and limber up inside to no avail. In the garden, there are trees to climb. After every climb, I feel more flexible and lithe. Being light on my feet is the only to creep around the big bears when they nap in the house to steal their water and their treats. Remember: A tree a day keeps the stiffness away.
A day outside revives the spirit and reminds you of who you truly are, this cannot be reiterated enough. If you are unable to spend a day outside, perhaps you can talk your humans on letting you go for a walk. I do appreciate a trip to the mountain, even if it requires a harness.