Did you know you can lose weight watching horror movies.

Those adrenaline-pumping movies can burn up calories because your heart starts racing.  It could be a good thing as long as you don't break out all the snacks while you are watching the movie.

Researchers got people to watch a variety of horror films while they were hooked up to several monitors. Doctors checked their heart rate, oxygen intake, carbon dioxide output and calories burned.

Metabolism specialist Richard Mackenzie says "each of the ten films tested set pulses racing, sparking an increase in the heart rate of the case studies."

He adds: "As the pulse quickens and blood pumps around the body faster, the body experiences a surge in adrenaline."

Here's the list of the top 10 calorie-burning horror films:

1. The Shining - 184 calories
2. Jaws - 161 calories
3. The Exorcist - 158 calories
4. Alien - 152 calories
5. Saw - 133 calories
6. A Nightmare on Elm Street - 118 calories
7. Paranormal Activity - 111 calories
8. The Blair Witch Project - 105 calories
9. The Texas Chain Saw Massacre - 107 calories
10. [Rec] - 101 calories