Too much caffeine
I love coffee/Shutterstock
That afternoon cup of coffee can disrupt your sleep cycle: Researchers at Michigan’s Henry Ford Hospital’s Sleep Disorders & Research Center and Wayne State College of Medicine found that consuming caffeine even six hours before bedtime can reduce how long a person sleeps—and the quality of their sleep. Psychology Today advises drinking your caffeine early in the morning, then tapering off by 2 p.m. After that, no caffeine for you. Check out these 31 caffeine-free ways to boost your energy.
You may take pride in your ability to do five tasks at once, but there’s a hitch: You’re not actually doing five tasks at once—you’re switching back and forth between them. All of that re-focusing uses up the oxygenated glucose in your brain, according to Science Alert, making you tired and less capable of tackling your to-do list. To counteract the issue, be more methodical about how you approach work by focusing on one thing at a time and scheduling regular 15-minute breaks to give your brain some much-needed R&R.