CNN iReport

The Chargers Blood Drive #31 is the longest running and most successful life-saving event of the year. Check out the video.

Facts about donating blood:

+ People who have been in car accidents and suffered blood loss can need 50 units or more of blood.

+ Much of Today's medical care depends on a steady supply of blood from healthy donors.

+ Every two seconds someone needs blood

+ Approximately 32,000 units of blood are used each day in the United States.

+ Anyone who is in good health, is at least 17 years old, and weighs at least 110 pounds may donate blood every 56 days.

+ The actual blood donation usually takes less than 10 minutes. the entire process, from when you sign in to the time you leave, takes about an hour.

+ Giving blood will not decrease your strength.

+ Children being treated for cancer, premature infants, and children having heart surgery need blood of all types.

+ If you began donating blood at age 17 and donated every 56 days until you reached age 76, you would have donated 48 gallons of blood.

+ About 3 gallons of blood supports the entire nation's blood needs for one minute.

+ 60% of the US population is eligible to donate - only 5% do on a yearly basis.

+ Since a pint is a pound, you lose a pound every time you donate blood.

Video by: Chris Morrow

Follow Chris on Twitter: www.twitter.com/morrowchris