Your vitality quotient

David Imrie is an author focused on practical health and wellness. His books, including Your Vitality Factor, Your vitality quotient, The backpower program, and Goodbye backache, offer readers clear guidance for improving physical well-being.

Richard Earle is the author of "Your Vitality Factor" and "Your vitality quotient." His books focus on helping readers improve their health and well-being, offering practical advice for a more energetic life.