Many newer flippable mattress models even offer a difference in firmness on each side, which is great if you are compromising with a partner or if you want to test different mattress types without going through the hassle of ordering and returning multiple mattresses. Flippable or not, Damon Tong, D.C., of Body Forward Chiropractic in Beverly Hills, says he typically recommends a medium-firm mattress for most people. Not only does this pick fall right in the middle of the firmness spectrum—which means it’s the most compatible with a variety of sleepers—but research also shows that medium-firm mattresses tend to be best1 for those who suffer from back pain....

But there’s a reason so many people commit to finding their retinol serum of choice: It has a host of aesthetic benefits such as decreased breakouts, improved collagen production, reduced fine lines, eased dark spots, more even tone, and faster skin cell turnover. That’s a lot of claims: Read all about the benefits here, which include the science to back it up. And if you find yourself on this retinol journey—determined to find your perfect match—we collected our all-time favorites that can treat a wide spectrum of goals....

There are different types of friends we may have in our lives, each of which plays a distinct role and may benefit our lives in different ways. “We can think about different types of friendships in terms of how much intimacy we want, how much depth we want,” explains Marisa G. Franco, Ph.D., a psychologist, professor at the University of Maryland, and New York Times bestselling author of Platonic: How the Science of Attachment Can Help You Make—And—Keep Friends....

As sex therapist Kyle Zrenchik, Ph.D., ACS, LMFT, tells mbg, any “tool, toy, or technique that helps someone achieve an orgasm is worth its weight in gold.” G-spot stimulation alone or with partners is an almost guaranteed good time, and choosing a vibrator that’s been specifically made for this task increases your chances of a happy ride to orgasm city. Ahead, we’ve rounded up our picks for the best G-spot vibrators to try this year....

Freezing, cloudy, stormy, or scorching weather can make running outdoors miserable. Luckily, indoor running equipment has come a long way in the last decade, ensuring even those who swear by outdoor workouts (like me!) can finally enjoy conquering a sweat session inside—and it’s all thanks to the best treadmill brands. We spoke with running experts, coaches, and physical therapists to learn more about how running and walking can improve our health and well-being and how to keep achieving these gains even when we can’t get outside....

We live in a culture that emphasizes most things masculine (doing, progressing, thinking) and undervalues the qualities of the feminine (being, reflecting, feeling). While we all experience the entire spectrum of emotions, most of us get lost in this territory. In this article I’m going to discuss feelings and drama, and why your relationship depends on your knowing the difference. Feelings and drama get grouped together all the time, as if they’re the same thing....

When it comes to seeing someone, there’s perhaps nothing more anxiety-inducing than figuring out how to define the relationship (DTR). But there comes a point when you’ve exhausted asking yourself all the questions: Are we talking? Are we dating? Are we exclusive? And now you’re ready to create the boundaries of your relationship and have an honest conversation about where you each stand. Importantly, how someone chooses to define a relationship is dependent on the individual, adds therapist and life coach Tess Brigham, MFT, BCC....