Vitamin B12 boosts energy levels and metabolism, but it will never work unless you do something about it, which is still proper diet and exercise
May support slow-wave and REM sleep architecture, per a placebo-controlled polysomnography study in younger and older adults (Copinschi et al., 1997, Neuroendocrinology, PMID 9349662)
avoid heat and light exposure
Though it can be irritating, sinusitis can usually be treated at home without medical intervention
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According to nutritionist Beth Warren, founder of Beth Warren Nutrition and author of Living a Real Life with Real Food , B12 also helps create red blood cells