Energy (or lack of energy) is contagious. If you feel energetic, you'll help the people around you feel energetic, too. And that makes them feel happier.

It would be great to get rid of that 2:30 feeling and every other ailment we experience by drinking some magic elixir, or taking some pill, but that isn't how being truly healthy works.

Lots of good results flow from having plenty of energy. Life just seems more manageable. Also, studies show, you're more likely to feel good about yourself.

In the summer, we often feel sluggish and tired during the day. Therefore, lunch becomes a critical point.

Getting -- and, more important, keeping -- your energy level high is a breeze. Just take a look at these expert tips and tricks:

How could they eat high amounts of bad food and not exercise, yet still become fitter AND live 30 percent longer than the average rat? One word: MITOCHONDRIA -- the source of your energy.