Even though there are more than 120 million people in the U.S. who are signed up to be an organ donor, an average of 22 people die each day waiting for transplants that can’t take place because of the shortage of donated organs, according to organdonor.gov. Every 10 minutes, someone new is added to the national transplant waiting list.

Unfortunately, in order for most on the list to get their organs, someone else must lose their life, sometimes very unexpectedly, like in the case of German Olympic canoe coach, Stefan Henze.

Henze was involved in a car crash in Rio this past Friday and suffered head injuries from which he did not recover. He died on Monday, but four others were saved thanks to his organ donation. According to German newspaper Die Welt, Henze’s heart, liver and both kidneys were transplanted successfully.

According to organdonor.gov, it’s not just the body’s major organs that can be donated. One person can save up to eight lives through donation, which also includes cornea and other tissue transplants. And anyone, regardless of age or medical history, can sign up to be a donor at organdonor.gov.

It only takes a minute to register, but choosing to be a donor could give the gift of years of life to someone waiting for a miracle.