Haunted House, Healthy Heart

October brings pumpkins, costumes, and the occasional jump scare—but what if fear actually had health benefits? It turns out that a good fright doesn’t just get your heart racing metaphorically. Research shows that the body’s response to fear—a spike in adrenaline, increased heart rate, and quickened breathing—is similar to a mild cardiovascular workout.

When you walk through a haunted house or watch a scary movie, your brain activates the “fight-or-flight” response. The adrenal glands release epinephrine (adrenaline), which causes your heart rate and blood pressure to rise and directs oxygen-rich blood to your muscles. A study published in Frontiers in Psychology found that participants who experienced fear-inducing entertainment, like horror films, exhibited temporary increases in heart rate and metabolic activity comparable to light exercise [1].

The Science Behind the Scare

Your body doesn’t know the difference between real danger and simulated fear—it just reacts. The National Library of Medicine notes that short bursts of adrenaline increase alertness, circulation, and even calorie burn, though the effect is brief [2]. Researchers at the University of Westminster estimated that watching a 90-minute horror film can burn up to 150 calories, roughly the same as a brisk 30-minute walk [3].

A Heartfelt Boost

That said, not all scares are created equal. For most healthy adults, these short-term spikes in heart rate are harmless and even invigorating. Adrenaline temporarily improves blood flow and oxygen delivery, which can make you feel more alert and alive. The American Heart Association points out that excitement-based stress (called eustress) can have positive psychological effects, such as boosting mood and releasing endorphins [4].

A Word of Caution

Of course, if you have a heart condition, you might want to skip the haunted maze. Sudden spikes in heart rate can be dangerous for people with cardiovascular disease or arrhythmias [4]. And while a haunted house can give your system a temporary jolt, it’s no substitute for regular exercise.

Bottom Line

So, should you trade your treadmill for a haunted maze? Probably not. But letting yourself get scared—within reason—can be surprisingly good for your heart, your mood, and maybe even your calorie count. Sometimes, a little fright is just what the doctor ordered.