Modern life system keeps us busy from dawn to dusk. People, after such a hectic day feel tired.
Yoga offers a beautiful system known as Chair Yoga designed for Busy Bees. these Asanas can be done during lunch breaks and Tea breaks for much needed Rejuvenation.
http://thehealthylivinglounge.com/2010/01/20/8-of-the-best-office-chair-yoga-exerises/