Home Remedies to Boost Stamina in Men Having lack of stamina or feeling tired may be a simple symptom of getting exhausted. However, poor stamina or loss of stamina may be due to some simple causes or may even be a severe cause. Major Causes of Lack of Stamina Low level of testosterone hormone Adrenal Fatigue Hypoglycemia Low level of HGH Emotional instability Work pressure Disturbed sexual performance Financial matters Home affairs Disturbed relations Home remedies for Low Stamina Here,