For many people life nowadays is very demanding. Those around us—and society in general—are continually asking for more and more, and we have increasingly high expectations of ourselves. We are so busy that we pay very little attention to the way in which we go about our most common daily activities.

This often has very negative effects on physical and mental wellbeing. The body and the mind often seem to be out of tune, giving rise to a number of increasingly common ailments. Persistent backache, headache, muscular tension, and nervous problems—frequent irritation or depression—are among the most common symptoms…