Most people suffering from thyroid often feel fatigued. Fatigue caused by the thyroid malfunctioning is often debilitating and manifests as persistent exhaustion that impacts your daily routine. Typically, thyroid diseases resulting from an overactive thyroid (e.g., Grave’s Disease) or an underactive thyroid (Hashimoto’s Disease) affect your body’s metabolism. This leads to feelings of exhaustion and fatigue. Whether you wake up tired or need frequent naps, the root cause can be your thyroid.