Title: Why Is My Cat So Active At Night? - Catster
Headings: 
Why Is My Cat So Active At Night?
Also:
How To Encourage Your Cat To Sleep At Night
Install A Window Perch
Get A Birdfeeder
Adopt A Companion
Increase Your Playtime
Never Give In

Content: If your cat awakens you by pounding on or scratching at your bedroom door, set an electronic pet mat, sticky tape, or an upside-down carpet runner on the floor outside your bedroom door. Never Give In
It’s important that you ignore your cat’s nighttime behaviors. If you don’t, she’ll think that her behavior is being rewarded, which reinforces and perpetuates the behavior. Get some good earplugs and keep your bedroom door closed. Once she learns you won’t be jumping up every time she wakes you up, she’ll give up trying. Even though cats are hardwired to be active during the night, it is possible to increase the amount of time they sleep and decrease their nocturnal activity. It’s certainly worth a try: a good night’s sleep for Fluffy will translate into a good night’s sleep for you. Photo: Yasuhiro