The thought of all that Halloween candy enough to scare you about your waistline? Have no fear, a new study says you can burn off that candy bar just by watching a scary movie!
It sounds too good to be true, and surely your doctor would tell you to get off the couch and get to the gym, but just for fun - let's just imagine this is the most fun way.
According to the new study, if you put yourself through 90 minutes of adrenaline-pumping terror, you can burn as many as 113 calories, nearly the amount burned during a half-hour walk and the equivalent to a chocolate bar.
So what movie should you be reaching for to help burn the calories?
The 1980 psychological thriller The Shining topped of the list of calorie-burners, with the average viewer using up 184 calories.
The study, done by the University of Westminster, measured the total energy expenditure of ten different people as they watched a selection of frightening movies.
Scientists recorded their heart rate, oxygen intake and carbon dioxide output - and discovered the number of calories used increased by on average a third during the films.
The research also revealed films featuring moments designed to make viewers jump in terror are the best calorie-burners, as they cause heart rates to soar.
"Each of the 10 films tested set pulses racing, sparking an increase in the heart rate of the case studies," said Dr Richard Mackenzie, senior lecturer and specialist in cell metabolism and physiology at the university.
"As the pulse quickens and blood pumps around the body faster, the body experiences a surge in adrenaline. It is this release of fast-acting adrenaline, produced during short bursts of intense stress (or in this case, brought on by fear), which is known to lower the appetite, increase the basal metabolic rate and ultimately burn a higher level of calories."
Jaws took the runner-up spot, with viewers burning on average 161 calories, and The Exorcist came third, with 158 calories.
So when you get home with that sack full of candy, grab a candy bar and a scary movie - and have a scary good work out!
The top 10 calorie-burning frightening films were: The Shining: 184 calories Jaws: 161 calories The Exorcist: 158 calories Alien: 152 calories Saw: 133 calories A Nightmare on Elm Street: 118 calories ParanormalMore>>