You're popping too many pills
No, not the criminal kind -- though it's a pretty safe bet that hard drugs don’t exactly keep you young. It's actually vitamins and minerals that could be problematic when it comes to aging. Sure, some may prevent age-related diseases, but as Dr. Roizen notes, "With almost all vitamins and supplements, when you have too much of them, you can get sick."
Case in point: even a "large amount" of vitamin D slashes your risk of many diseases, but too much of it is linked to a higher risk of dying from heart problems. Too many supplements may also increase your cancer risk, though when taken in the right dosage, they can be good for you.
You don't have much of a gym game
Sweating it out is good for the body and the brain, as it can help control stress, keep your weight in check, and maintain muscle mass, says Dr. Moore. All good things!
Working out routinely is also linked to lower markers of inflammation (which can be a result of aging), and experts believe that sitting on your butt can lead to "quicker degradation of physiological functions" and a "greater risk of premature death." In case you’re still not convinced you should lace up your kicks, consider this: just 15 minutes of daily exercise may tack on three years to your life.
... or you work out too hard
"Going overboard on anything is going to negatively impact your health," says Dr. Moore. "And that’s true for exercise, too." Dr. Roizen agrees: "If you do more than two hours of cardio in a row, you're increasing the rate of aging."
So find that sweet spot (the CDC recommends a couple different combos), and remember that experts suggest including harder and easier workouts in your routine and to factor in recovery time.
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Alexandra Duron is a freelance writer for Thrillist and is a soon-to-be recovering sugar and Netflix addict. Really, she promises.