We all need blood to survive.
Some of us don't make enough of our own and for others a freak accident can cause huge blood loss - in those times people who give up some of theirs are helping to save a life.
Amanda Brodie has been a registered nurse for more than 20-years and she loves her work with Blood NZ because it saves lives.
"I work for the blood service. Waikato has the biggest area to cover, we go right over to Gisborne. We all take turns going out in the mobile and staying in the Hamilton rooms.
"We go up the Coromandel, we go down to New Plymouth, Te Hara, Stratford and Taupo and everything in between."