Energy is the sum of sleep, movement, nutrition, and stress regulation. A high-impact baseline: consistent sleep schedule; protein and vegetables at meals; less refined sugar and ultra-processed foods; daily walking/steps plus 2 strength sessions weekly; caffeine earlier in the day and good hydration; short daily stress breaks (breathing, meditation, planned pauses). If you still feel persistently depleted, consider evaluation for anemia, iron/B12 deficiency, thyroid disease, mood disorders, or sleep apnea. Supplements help mainly when a true deficiency exists—routine beats quick fixes.