The Diagnostic and Statistical Manual, which therapists use to make mental health diagnoses, doesn’t group narcissism into different types, but some experts classify narcissists into one of three groups: A gaslighter might, for example, deny doing something they did, accuse you of behavior they themselves are guilty of, or call you oversensitive or dramatic when you confront them. You may be particularly susceptible to gaslighting if you’re a people-pleaser, empath, or codependent....

Here, discover the small, sustainable, science-backed changes—plus one really intriguing supplement—that will help you look and feel your best: When people were allowed to sleep only 4.5 hours per night for four nights, participants in one study experienced a 16% drop in insulin sensitivity overall, and their fat cells’ sensitivity to insulin dropped 30%. Researchers say that is equivalent to metabolically aging someone 10 to 20 years. To ensure you’re sleeping enough, scale back on tech before bed, try wearing blue-light-blocking glasses in the evening, and consider a magnesium glycinate supplement....

If you’ve been to a spa, you’re probably familiar with the intoxicating smells that essential oils produce. Maybe you’re already experienced in traditional essential oil practices, but you may be missing out on one of the most enjoyable times to experience aromatherapy: during your daily rinse. We’re going to list a few ways to romanticize this step in your routine, some DIY and some ready to buy. This way, you’ll add some much-needed pampering into your day without having to carve out any extra time....

So first, let’s dive into what exactly dandruff is. Then how you can better keep it under control with the correct lifestyle changes, products, hair care tips, and so on. “Dandruff causes an itchy, flaky scalp. Also known as seborrheic dermatitis, a form of eczema, it is caused by a yeast, Malassezia furfur,” says board-certified dermatologist Raechele Cochran Gathers, M.D. “The malassezia yeast is common, and people with seborrheic dermatitis are just a little more sensitive to it....

Either way, it can be frustrating and overwhelming when your brain isn’t firing the way it should be. When I have patients complain of brain fog (which is different from headaches), I immediately look into diet, as there are many things hidden in our daily meals that can contribute to slower-than-usual thinking. The main culprits are typically dairy, gluten, sugar, and many other additives to foods we ingest. The best way to alleviate brain fog with diet is to consume mostly whole foods, fresh produce, and to buy from local farms and gardens....

As a certified Pilates instructor and prenatal and postpartum corrective specialist, the question I often find myself asking is: “Why do so many prenatal and postpartum fitness classes focus just on restorative practices and not on actually building the strength and stamina required for motherhood?” Your primary focus post-baby is restoring your deepest core and pelvic floor muscles, and part of this includes relearning how to breathe. Because the growing baby essentially pushes organs up into your diaphragm, you may have become accustomed to short, shallow breathing—this can prevent you not only from finding nervous system relief but also from using your core functionally....

If you’ve been itching to join the running community, it may seem simple enough (you just put one foot in front of the other, right?). But if you’ve never pounded the proverbial pavement before, you may have a few lingering questions. To home in on that form, posture and foot placement are key, says Danny Mackey, the head coach of Brooks Beasts pro running team. “Form is nuanced to the individual,” he says, “but I would advise to make sure when you start, you’re looking 10 to 20 meters ahead (not down or up) to maintain posture, and try to use your entire foot when you land....