The importance of a good cup of joe goes beyond caffeine: "Coffee is almost always the first thing I reach for in the mornings," says Wachtel. "I love the ritual as much as the energy." She's onto something: Getting your body used to certain habits at certain times can help maintain regularity—and energy. (Try these 5 Easy Ways to Start Your Day Stress-Free too.)
And while we all know the powers of caffeine, Deborah Rathz, M.D., Ph.D., a medical ICU and ER physician at the Cleveland Clinic, says that timing matters. "My day begins with a mug of dark roast coffee, whether I start at 7 a.m. or 11 p.m." Feel yourself crashing midday? Try Rahtz's trick and sip something like coconut chai tea—which has less caffeine than coffee. Then skip it later in the day—at least six or so hours before you hit the sack—so that it doesn't mess with your next night's sleep.
If you need something, Wachtel finds that a fresh juice (she makes hers with kale, apple, celery, cucumber, ginger, and lemon) rejuvenates just as much as caffeine.