To improve your energy levels, ensure you get 7 to 9 hours of quality sleep. Eat balanced meals that include whole grains, fruits, vegetables, protein, and foods rich in iron and vitamin B12, and drink enough water throughout the day. Regular moderate exercise, such as brisk walking for 30 minutes most days, can improve stamina and mood. Manage stress through relaxation techniques and limit excessive caffeine or alcohol. If you still feel tired for several weeks, please consult your doctor for personalised advice.