Most of us suffer from lower levels of energy today, the reason being high levels of stress and the sort of lifestyle that most of us have. Its like we wake up in the early in the morning, hurry up with breakfast, drive our cars through long traffic jams, reach office, start working, get off in the evening, again through the traffic jams and back to home, we are very tired and just fall on the couch in front of the TV. Such a lifestyle in turn further lowers our external and internal energy levels, increases stress, and is detrimental to our overall health.

Also take a lot of sleep. An 8 hour sleep is great to maintain your energy levels and make you feel fresh and healthy for the rest of your life. Keep hydrated by drinking loads of water, and eat food stuff rich in natural proteins, vitamins and minerals. Please be sure that increase amounts of caffeine intake dehydrate your body, and lower energy levels.  

And keep yourself active, keep an amount of movement, even inside your office space. Stop depending on processed food and go natural, these alternatives really help improve your energy levels in the long term.