9 best vitamins for sleep

You probably already know of vitamin C’s importance to your immune system, but did you also know it’s vital to sleep? According to a 2014 study published in PLOS ONE, people who have low blood levels of vitamin C had more sleep issues and were more prone to waking up during the night. Of course citrus fruits are high in C – but these foods have more vitamin C than an orange. You could also pop a vitamin C gummy for extra assurance.