Fatigue.

Because of excessive and prolonged durations of work, everyone experiences a feeling of complete exhaustion occasionally, which is known as fatigue.
Causes
Heavy work for prolonged time.
Excessive mental activity.
Signs & Symptoms
Tiredness or weariness.
Slight giddiness may also be felt.
Body pains.
Herbal Medicines
Fruits: Fruit juices are generally helpful in this condition.
Grape juice is specially useful as it immediately brings in stamina.
Dates or Khajura are great sources of instant energy. These should be taken regularly along with a glass of milk.
Nutritious food should be taken and fried and junk foods avoided.
Exercise: Improvement of blood circulation is necessary to combat fatigue. This can be achieved by daily exercise routines like brisk walks, gardening, taking up a sport, or swimming.
Ayurvedic Remedies
Ashwagandha churna - 5gms twice a day, well mixed in a glass of milk should be taken regularly. It is a good health supplement.
Geriforte tablet (Himalaya Drugs) 1 tab. twice daily. Not to be used in people with high blood pressure.
Trasina capsule (Dey's) 1 capsule twice daily for 7 days.
Aswal Plus capsule 1 capsule twice daily.