This is a book about subtle energy, for those who can't bring themselves to 'believe in' subtle energy. Life Force explains techniques which enable the reader to explore and celebrate the feelings that are undeniably, irrefutably real to consciousness, and appear to stem from 'subtle energies'. It explores those schemes of belief which work best for experiencing, cultivating and manipulating these subtle sensations. It is about learning new languages, the languages of breath and energy-sensing.