Do you rely on your cup of Joe for a quick pick-me-up? You're not alone, according to recent research that shows most Americans use caffeine to boost energy. The problem: Unabated stress, less-than-ideal nutrition, sleep deficits, and too little exercise deplete our bodies, and this morning habit is nothing more than a quick fix.

Not addressing the problem from a long-term perspective can lead to dwindling energy stores that sap your immune system (check out these top 5 immunity-boosters), drain your libido, and interfere with concentration. The solution? A healthy combination of herbs and supplements, nutrient-rich foods, and regular exercise that boost energy and keep it high.