Studies warn that 50% of adults are disrupting their sleep if they take this common supplement in the evening

From drinking coffee to staring at screens, there are certain habits that pretty much everyone knows you should avoid doing before bed if you want a good night's sleep.

However, there are some sleep-disruptors that aren't as widely known —and are even considered healthy — including one that may affect up to 50% of adults in the US.

No, it's not exercising, although a vigorous workout near bedtime can negatively impact sleep. We're talking about vitamin supplements.

A study found that taking a multivitamin was associated with poorer sleep maintenance, which means a greater likelihood of nighttime awakenings and difficulty getting back to sleep.

Plus, certain B vitamins that are commonly found in multivitamins are associated with insomnia, disrupting your internal body clock and even cau