With every heartbeat, blood delivers vital nutrients, oxygen and other chemicals to every cell of our bodies. It also carries away our body's waste. Approximately 5 litres of blood travel many times through about 96,560 km of blood vessels linking the cells of our organs and body parts. It is an important fluid we cannot live without. The heart gets messages from the body that tells it when to pump more or less blood, beating about 100,000 times a day, more than 30 million times per year. Innards is a light installation reactive to human touch. Inner becomes outer