Distinguish quick relief from fixing the root cause. For today: hydrate, take a brief outdoor walk, eat a protein-forward meal, and consider a short nap (20–30 minutes). For the next week, standardize: consistent sleep schedule, protein in meals, and 20–30 minutes of daily walking. If you wake unrefreshed, snore, or have daytime sleepiness, consider sleep-disordered breathing. Recurrent severe fatigue warrants labs for anemia/iron, B12, thyroid, and glucose. Excess caffeine and energy drinks can worsen sleep and create a fatigue loop. Seek medical review if symptoms are severe, new, or accompanied by red flags.