Do you try to include physical activity at work?

Do you try to include physical activity at work? (Ralph Orlowski, Getty Images))

For people who prefer not to sweat Dixon said they should consider flexibility exercises.

"Use that time to do stretches and rotations," she said, "or do core work that‘s not as intense as your cardio workout."

Dr. Nicolaas Pronk, an expert on workplace wellness with the American College of Sports Medicine (ACSM), said often workers' lunch time is more limited than 30 minutes.

He recommends workers first focus on reducing prolonged periods of sitting with 10-minute breaks throughout the day.

"Sometimes these are called instant recess or booster breaks," said Pronk, vice president of Health Partners Research Foundation in Bloomington, Minnesota.

Changes in office design, such as sit-stand desks, could help workers without altering the work flow, as well as using stairs.

"In the workplace setting, it may be most important to ensure that people do not sit for prolonged periods of time first, the to stimulate overall increases in physical activity," Pronk said.

Bryant said another side benefit of the lunchtime workout is the brown bag.

"Odds are you'll probably be eating better because you won't be going out to lunch," he said.

(Editing by Patricia Reaney and Andrew Hay)