When you feel you are fiddling, just eat some juicy fruit. Fresh fruit is rich in fructose and after its consumption, the body will not react with sudden raising and lowering of blood sugar, but will raise the level of energy and you will feel fresher.
Besides healthy food the body needs water for its rehydration. Occasionally drink in a glass of water. The required quantity of water throughout the day is 2 liters.
If you experience a lack of energy and you feel drowsy, do not immediately drink coffee or eat chocolate. Sugars and caffeine will raise the level of sugar just for a short time and you feel the flow of energy. But right after that sugar falls sharply and you will feel exhausted.
Try during the day instead of the usual three to have five smaller meals.Thus your metabolism will constantly working by not letting your energy levels fall below the level necessary to perform everyday tasks. Better to replenish energy with smaller meals that will come to accelerate the metabolism and thus the body will not store excess food in fat.
A healthy and varied diet can increase energy but cannot compensate lack of sleep. Therefore, in addition to diet, you need to look out for the quality of sleep.