All in all it’s no wonder mascaras are such a coveted beauty item for many. And for those on the market for their newest addition, we rounded up and tested the best clean mascaras available right now. What mbg’s beauty director says: This is one of my personal favorite mascaras—so much so that I once wrote a whole story about how fantastic it is: “This natural mascara holds up, take my word for it—a word from someone who has tested mascaras (clean, natural, and decidedly not) for years and could clock samples up into the hundreds....

Vitamin deficiencies are not always tested in a doctor’s office for a few reasons. First, these tests are typically not covered by insurance, unless you have a known diagnosis. The symptoms of vitamin deficiencies can also be vague, making it difficult for providers to pinpoint a cause. Lastly, some health care providers are not comfortable treating vitamin deficiencies, especially for more obscure vitamins. Thankfully, the rise of at-home testing is making it easier to learn more about your body’s vitamin and nutrient levels without a doctor’s order....

As an ACE-certified personal trainer with a specialization in orthopedic exercise, I’m a huge proponent of strength and resistance training to help enhance overall daily functioning, improve posture, boost your metabolism, prevent injury, and promote longevity—and science backs me up on this. A meta-analysis1 from the British Journal of Sports Medicine confirmed that a regular regimen of muscle-strengthening activities can reduce your risk of mortality, cancer, cardiovascular disease, and diabetes by up to 17%....

Looking to buy a cold tub for yourself? We rounded up our top picks, as well as the most compelling evidence that soaking in cold water may actually be beneficial to your overall health. “Used as a recovery method, the water should probably be under 10°C,” suggests cold therapy expert Mark Harper, M.D., Ph.D. “But just to get the cold buzz without quite so much discomfort, temperatures of over 10°C (and even up to 20°C) will have most of the effect with much less pain,” he adds....

Not sure what to look for in an energy-efficient space heater? We spoke with home health and safety experts, and we’re sharing their advice below, plus their most helpful tips on how to warm up your space, and our top picks for the best energy-efficient space heaters. There are certainly energy-efficient convection heaters, too, but the EPA doesn’t currently label space heaters as an Energy Star–qualified product—which can make choosing an energy-efficient space heater a bit difficult....

With a potpourri of weight benches to consider, it’s tough to decipher which are worth adding to cart (not to mention taking up space in your home). Below, we’ve demystified the topic, rounding up the best weight benches for every exercise type and experience level, with expert advice on how to choose the best one for you. “A weight bench is very versatile. And [when you have one at home], you’ll eliminate any excuse as to why you couldn’t get your workout in,” Santucci explains, continuing that he and his clients use the weight bench at his gym almost every day of the week....

Research is still being done to better understand individuals who demonstrate these traits and to help others learn how best to interact with them, so to clearly discern fact from fiction, we reached out to psychologists and personality researchers to explain the Dark Triad, identify associated traits, and suggest ways to interact and cope with these dark personalities. “The dark triad traits share a common core of antagonism (or low agreeableness),” says Virgil Zeigler-Hill, Ph....