They head outside

After you step foot in the office in the morning, lunchtime might be your only chance to escape your building. As little as two minutes in the fresh air to feel the sun or watch the rain could help your mind and body reset from the pressure of the day.
They get away from their desks

Even if you can’t make it outside, escape your desk for at least 15 minutes. Chat with a friend or stroll through the hallways. Your mind will feel more refreshed when you sit down again to get back to work.
Here are other effortless ways to be more productive at work.
They brown bag it

Packing your own lunch gives you more control over what you’re eating, and it doesn’t need to take much time or creativity to plan. A pita “pizza,” chicken and veggie wrap, or peanut butter and banana sandwich can make an easy, quick option. Your homemade lunch will probably be cheaper and healthier than whatever you’d normally get from the deli or cafeteria.