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Watching a 90-minute horror movie can burn up to 113 calories, that's the same as a 30-minute walk.

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Watching a horror movie might seem like an unlikely form of exercise, but research shows that it can actually help you burn a significant amount of calories—almost as much as going for a short walk. This might come as a surprise to many, but the physical reactions one experiences during a horror film can lead to a noticeable calorie burn.

When you watch a horror movie, your heart rate increases. This acceleration is part of the fight-or-flight response triggered by intense scenes. The body prepares itself to either flee or fight, pumping more blood around the body, which in turn increases the amount of oxygen that fuels the burning of energy. Alongside a faster heart rate, viewers often experience heightened adrenaline levels. This hormone, which floods the body during periods of stress or fear, helps to break down fats and carbohydrates, which in turn burns calories.

Research suggests that on average, watching a 90-minute horror movie can burn up to 113 calories—the equivalent of what might be burned during a 30-minute walk. The level of calorie burn varies depending on the intensity of the movie; the more frightening the movie, the higher the calorie expenditure can be. Movies with lots of jump scares or scenes that cause tension might lead to a higher calorie burn, as they provoke more significant physical reactions.

This does not mean that watching horror movies should replace regular physical exercise, but it's an interesting way to enhance calorie burning, especially for those who enjoy watching these kinds of films. It also adds an additional benefit to the viewing experience, beyond entertainment and the thrill of fear. So, next time you sit down to watch a horror movie, remember that it’s not just a scare fest—it’s also a calorie-burning session. This might provide a little extra motivation to choose a scary movie during your next movie night.