The Dark Side of Human Psychology: 13 Facts That Will Shock You

We all have a dark side. It's the part of us that is selfish, greedy, and destructive. But what many people don't realize is that our dark side is also a powerful force that can influence our behavior and decision-making in ways we never even imagined.

1. Heartbreak can be fatal, which is called stress cardiomyopathy.

2. 90% of people like to send text messages…