As the health editor at mindbodygreen and the author of the upcoming book Magnesium: A Lifestyle Guide to Epsom Salts, Magnesium Oil, and Nature’s Relaxation Mineral, I’ve spent my fair share of time both soaking in Epsom salt baths and at my desk researching the history of Epsom salts, their benefits, and how we might be able to use them to treat various health woes. Unfortunately, it’s suspected that a large portion of the population isn’t getting enough magnesium through their diet. This is in part because of how our soil has changed over the years—aka, the mineral content has decreased drastically2—and also because processing foods leaches them of their magnesium content, leaving them virtually devoid of the mineral. Magnesium-rich foods include leafy greens, fatty fish like salmon, and nuts and seeds. Since Epsom salts are technically a form of magnesium therapy, the benefits you get from bathing in a magnesium-rich bath are thought to be similar to those you get from taking oral magnesium. Integrative medicine doctor Bindiya Gandhi, M.D. is a fan of Epsom salts for more reasons than one, explaining that “I recommend Epsom salt for muscle aches, anxiety, and to help patients relax and sleep better. I also have postpartum patients and with those with hemorrhoids soak in Epsom salt to help with recovery. I personally soaked in Epsom salt prior to labor to help have a smooth and easy vaginal delivery. Many people are deficient in magnesium and using epsom salt soaks instead of a supplement can be therapeutic.” Here are some of the most common reasons why people are using Epsom salts baths on the reg: To dose Epsom salts, just follow the directions on the package of whatever brand you’re using. Don’t be surprised when they ask you to pour half the bag (or the entire bag!) into the bath—you need a lot to get the desired effects! Dissolve the salts in the water while the bath is running, and soak 15 to 30 minutes. If you want to bring your bath to the next level, try adding a few drops of lavender or chamomile essential oil or one of these PureSoma soaks that feature different herbs, clays, and minerals that can also help with recovery, sleep, or detox. One note: Excess magnesium is excreted7 through your urine, and magnesium balance in the body is controlled by the kidneys, so if you have a kidney issue, you’ll want to talk to your doctor before supplementing. In fact, it’s always best to mention to your doctor when you’re thinking of taking a new supplement and to make sure it’s on your chart if you’re already taking it. Want one last Epsom salt tip? Leave the phone out of the bathroom while you soak—you’re taking away some of the benefits when you’re reading the news or scrolling through social media. Instead, sit in silence, listen to some calming music, or try a guided meditation.