Final answer:
The life energy or force that's said to 'ride' the breath is called prana, a concept from Indian traditions associated with yoga and meditation. The life energy or life force in the body said to "ride" the breath is called prana. Prana is the vital life force or energy that permeates all living beings.
Step-by-step explanation:
The life energy or life force in the body said to "ride" the breath is commonly referred to in several traditions, notably in Indian culture where it is called prana. This concept is central in yoga and various forms of meditation, where breathing techniques are used to regulate this life force for overall well-being and spiritual practices. The belief is that prana moves with the respiration process, as one inhales and exhales, and it is this energy that sustains the body and its vital functions.