system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If keeping your heart rate up is good for you during exercise, is the same true of watching scary movies, playing video games, or other passive heart rate boosters?
gpt
Heart rate increases due to exercise are healthier than heart rate increases due to terror (eg. watching a scary movie). Terror-based heart rate increases are accompanied by a spike in adrenaline, which can be damaging to your heart over time.