Okay, we know that sex is fun, but guess what? It’s good for you too! The top ten healthy benefits of good sex are even backed up by experts, researchers and scientists:

1. Sex is a stress reliever

Sex can lower blood pressure and reduce stress. One study looked at women’s heart rates and cortisol levels as a measure of stress response. It found women showed less stress after good sex with a partner. Emotional support alone didn’t have the same effect.

2. Sex boosts immunity

Good sexual health can mean better physical health. Having sex once or twice a week has been linked with higher levels of antibodies that can protect you from getting colds and other infections.

3. Sex burns calories

Thirty minutes of sex burns around 85 calories. That may not seem like much, but the more sex you have, the more you burn. Sex versus the gym… hmmm?

4. Sex improves cardiovascular health

Women who have more sex tend to have higher levels of estrogen, which protects against heart disease.

5. Sex boosts self-esteem

Researchers at the University of Texas found that a self-esteem boost was one of 237 reasons people have sex.

6. Sex improves intimacy

Orgasm and having sex increases levels of oxytocin, the so-called love hormone. It helps us bond and build trust. Researchers from the University of Pittsburgh and the University of North Carolina evaluated 59 premenopausal women before and after contact with their husbands and partners. They found that the more contact, the higher the oxytocin levels.

7. Sex reduces pain

As the hormone oxytocin surges, endorphins increase and pain decreases. So if your headache, muscle aches or PMS symptoms seem to improve after sex, go ahead and thank the oxytocin.

8. Sex strengthens pelvic floor muscles

Bring on the Kegels! Doing a few of these exercises during intercourse offers several benefits. Women have more pleasure; they’re strengthening their pelvic area and helping to minimize the risk of incontinence later in life.

9. Sex helps you sleep better

According to researchers, oxytocin released during orgasm also helps you catch more z’s. And that can come from solo sex or sex with a partner.

10. Sex fights aging

Sex is a form of exercise. And like most exercise, it burns calories and can battle the onslaught of aging. In fact, nursing home experts say they wish seniors would have more sex.

Stacy Lloyd is a writer and video producer in Phoenix, Arizona. A former television news journalist, she covered stories around the world. Currently, she produces corporate and non-profit videos and broadcast programming.