|Cat on a leash|
First of all, spending time playing with your cat will make him feel loved. It will give him exercise and help work off any excess energy he may be experiencing.
Cats like to eat green things. Plant some cat grass in pots around the house and allow him to nibble from them. This will help take care of his need to eat greenery.
Opening a window that has a secure screen will allow your cat to have fresh air. If you hang a bird feeder within sight of this window, you will find your cat staying entertained for hours on end as he watches the birds come and go.
If you have a porch, tying your cat out on a leash will allow him to lie in the sunshine and breathe fresh air. The leash will keep him safely secure so he does not roam and get lost or hurt. This is one instance when it is important to make sure he is up to date on his shots. This will make sure he does not catch any airborne diseases.
Following the above suggestions will help insure your indoor cat stays both happy and healthy—and all those who share their home with a cat know that a happy cat makes for a happy home.