Here are some tips Follow a high protein n high calorie diet . Reduce intake of non nutritious foods - tea , coffee, maids n bakery foods , soft drinks , chips etc Include nuts , dry fruits , lassi , milkshakes , dry fruit ladoo, peanuts , thick dal , eggs n non veg , boiled sweet potatoes n kerala variety banana . Sleep on time Exercise to increase muscle mass . Meet a doctor to get a complete physical check up before doing any of the above .