We've all been there. When it's been a rough day, or a particularly long week at work. Or perhaps things with your partner are so comfortable, so chill, that those long evening snuggle sessions or quick afternoon romps have turned into something else. Something like actually watching Netflix and chilling on opposite ends of the sofa. And now, sex has become something akin to a special occasion. Only to be attempted on long weekends or in hotel rooms. If this sounds familiar, you're not alone. According to a recent survey, Millennials are statistically having less sex than young adults were 30 years ago. And when you add in the routine of being in a monogamous relationship, it can be a real libido killer.

Of course, we don't need to tell you that sex is good—but it may be better for you than you think. Sexual activity with a partner has been proven to beef up your immunity, fight stress, reduce pain and strengthen the connection of your relationship. And data from an often-sourced 2004 study of 16,000 American adults on wealth, sex and happiness led economists to conclude that increasing your frequency of intercourse from once a month to once a week can increase your happiness to the same extent as having an additional $50,000 in the bank. So how do you boost your bedroom game?

Don't Forget About Morning Sex

Apparently, there are a handful of practical, scientific benefits to morning sex—from relaxing you for the day ahead to activating your brain. But here's why you want to do it: You're already in bed, the light is flattering and this way, you won't find yourself making (or hearing) excuses later in the day. Plus, you've likely woken up ready to go. A quick rinse with mouthwash is all you need to have a grin on your face until lunch.

Surprise Your Partner

Even the people who swear they hate surprises enjoy a surprise that revolves around sex. Welcome your loved one home with an erotic surprise. Have the bed made up with a tray of Champagne and strawberries. Or tell them not to say a word as you undress them and pull them into the shower. The key here is not to do it too often. Surprises should shock and delight.

Share Your Ultimate Fantasies

The benefit of being in a relationship is that there's real intimacy. They know you in and out, which means you should be comfortable enough to open up about your fantasies. Talk about what turns you on and about something you've never tried but would like to explore. Set aside some time to discuss what your partner is open to doing and what desires he or she is into as well. Just talking about it can get you in the mood to try a few new things.

Do Your Homework

It turns out that internet porn could be considered research, according to respected love coach Cate McKenzie. "Men are curious sexually, so he can go and explore and watch videos, then he can massage her and then introduce these things with sensuality," she says. "A great thing to do is ask her what she wants. Women are often scared of getting it wrong so this will help."

Embrace Foreplay

A quickie is fun when you're both in the mood, but sex therapists are constantly extolling the virtues of foreplay because it can take a kiss on the neck and turn it into a mind-blowing sex session. And the longer you can extend foreplay, the better. It only builds that great sexual tension, teasing the body and leading to one hell of an orgasm at the end. The kind of orgasm you want to have again and again.