Typically, you must be at least 17 years old and meet a few health criteria to donate blood. If you’re able, it’s a great way to help save lives.

The American Red Cross offers this advice on what to expect:

• One blood donation can help save the lives of three other people. The donation procedure is safe and easy.
• While the donation itself only takes about 10 minutes, expect to be at the donation center for about an hour.
• Prepare for donation by making sure you’re well-hydrated. Eat a nutritious meal, skipping any foods that are high in fat.
• Make sure your shirt sleeves can be rolled up above the elbows.
• Bring your driver’s license or a donor ID card.
• If you’re 16 and donating in a state that allows it, bring signed parental consent. Also bring a list of any medications you take.
• If you’re feeling sick beforehand, reschedule the donation.

Source: HealthDay