It's National Blood Week and ITV Border has previous looked at what happens and who benefits when blood is donated.
Amy Dunsmuir has been to the Cumberland Infirmary in Carlisle, to see what happens to the blood when it reaches the hospital:
More top news
Emma brings you Saturday's forecast
Longest cold spell of winter so far. Mainly dry and bright, but feeling bitterly cold today. Very wintry further east, blizzards possible
Mountain Rescue has seen a 5% increase in rescues and with the current conditions they're advising people to take extra care.