10 Reasons Why Sex is Incredibly Important in Your Relationship

Most couples think about sex, but few actually discuss it openly. It’s not about the mechanics of sex, but about why it truly matters beyond the obvious pleasure aspect.

You might believe that your shared love of movies and brunch dates bind your relationship together. That’s all well and good, but scientific evidence demonstrates that sex significantly enhances your relationship. So let’s break down what’s really happening when you prioritize sex in your relationship.

1. It Actually Resets Your Stress Response

Do you feel like your shoulders are all the way up to your ears from stress, your jaw hurts from clenching your teeth too hard, you’re ready to snap at anyone who looks at you wrong? Sex might be the answer you didn’t know you needed.

When you’re intimate with your partner, your cortisol levels drop back into normal range. Your body releases endorphins. The tension dissolves. It’s not just feeling better temporarily. Your stress response actually resets. Think about that. Most people reach for wine or meditation apps. But doesn’t this solution sound way more fun?

2. Your Immune System Gets Stronger

People who have sex at least once or twice a week have higher levels of immunoglobulin A in their saliva. A study was conducted at Wilkes University proved it. Immunoglobulin A is the antibody that helps you fight off the seasonal flu, regular colds, and that pesky virus that’s going around your office. Who knew you could boost your immune system by having fun times with your partner insert of drinking vitamin C shots and stocking up on vitamins?

3. The Bonding Thing Is Real

You’ve probably heard of the “love hormone”—oxytocin. It’s responsible for strengthening a bond between people and makes us feel all those positive happy feelings towards each other. In an actual measurable biological way. Couples who have a healthy intimate life actually feel more connected to each other even when they’re going through hard times. The chemistry you feel is very literal.

4. It Strengthens Trust

When you’re literally naked with someone—physically and emotionally—it’s a trust exercise.
And when trust is strong? Everything else in the relationship feels safer. Trust improves your communication in a relationship. Good communication influences how you handle conflict, make decisions together, and support each other through stress.

The couples who prioritize their sex life tend to have stronger relationships overall. Cause and effect work both ways, but the connection is undeniable.