"Energy, some special kind of energy, just leaks out and I am left lacking the confidence even to cross the street," Diane Arbus, the photographer, once complained. And while Ms. Arbus tried to overcome her energetic and spiritual ups and downs with her art, you can use lifestyle changes as well as self-expression to revive your vigor.

To Sleep, Perchance to Energize

When you're looking for a boost in personal energy, you've got to get enough sleep, insists Jacob Tietelbaum, MD, author of From Fatigued to Fantastic! (Avery). Dr. Teitelbaum emphasizes that unless you "give your body eight to nine hours of sleep per night," your personal energy will never be adequate.

Studies show that getting less than six hours sleep a night hurts your mental performance and drains your energy (Sleep 3/15/03). As your sleep debt builds up, your energy drops down.

"[Our studies show] the importance of sleep as a necessity for health and well-being. Even relatively moderate sleep restriction, if it is sustained night after night, can seriously impair our neurobiological functioning," says Hans P.A. Van Dongen, PhD, Assistant Professor of Sleep and Chronobiology at Penn State.

A recent poll by the National Sleep Foundation found that Americans, on average, are getting less than seven hours of shuteye a night. That sleep deficit drains energy.

Watered Down Energy

Added to that sleep requirement, Dr. Teitelbaum stressed in an interview with a lack of water can deplete your personal energy.

"The number one problem is often dehydration," he says. "Make sure you stay hydrated. Although I think it's a bad idea to [obsessively] count glasses of water, you should carry a bottle of water with you, check your lips and if they feel dry drink more water." Overall, your body is about 60% water and 70% of your muscles consist of water. If you let your water levels dip too low, your muscles suffer and your energy levels dip as well. Research shows that as your body dries out, your mental processes can slow down. And the hotter the temperature, the more fluid you may lose (AIHAJ 2002; 63(2):190-8).

B Vitamins for Energy

Also important for keeping your energy up "is getting enough of the B vitamins and magnesium." And even though Dr. Teitelbaum advocates the necessity of a well-rounded multiple vitamin and mineral supplement plus an adequate diet and amino acids to get all the nutrients you need, he recommends "taking a high-level B complex. The RDAs (the government's Recommended Daily Amounts) are inadequate."

In the body, B vitamins are used for the production of energy on a cellular level. For instance, vitamin B1 (thiamine) is crucial for burning carbohydrates effectively. And vitamin B6 (pyridoxine) is necessary for the body's ability to properly use B1. At the same time, vitamin B12 (cobalamin) is required for proper nerve function. The need for B12 may necessitate a supplement: Up to 30% of everyone over the age of 50 may have trouble absorbing B12 from their food (Crit Rev Clin Lab Sci 1996; 33:247). Plus, since vegetables contain very little absorbable B12, vegetarians of all ages may also require B12 supplements.

Dr. Teitelbaum also believes that taking malic acid, a nutrient derived from apples, can help. Along with the B vitamins, malic acid is used by the body in the production of energy. When taken with magnesium, malic acid has been shown to ease the pain of fibromyalgia (J Rheum 1995; 22(5):953-7), a condition characterized by fatigue and lack of energy accompanied by painful muscles and joints.

Ginseng Boost

Asian ginseng (Panax ginseng) represents a potential tool for controlling blood sugar and improving stamina.

According to Dr. Teitelbaum, "...Asian ginseng enhances energy, raises blood pressure and improves adrenal function...Asian ginseng has such a wide mix of health benefits that its name, Panax, comes from the Greek roots of pan (meaning 'all') and akos (meaning 'cure')-that is, 'cure all.'"

Research on people with diabetes shows that this herb may help control blood sugar levels. People who suffer what is called type 2 diabetes often eat small meals to keep their blood sugar from varying too much. (Rising and falling blood sugar can drain you of energy as well as make diabetic problems worse.)

An investigation of how another form of ginseng, American ginseng (Panax quinquefolius), affects blood sugar after eating found that it tempered changes by up to 20% (Arch of Internal Med 4/00). These scientists found that folks with diabetes did best when they took the herb within two hours of a meal.

Ready to re-energize? Time to stop skimping on sleep and rushing through inadequate meals. For all of us, slowing down and giving our bodies a chance to regenerate its zip can make the big energy difference.