They want your blood

Your blood, for “immortality.” | Image: Cath Virgina / The Verge, Getty Images This is Optimizer , a weekly newsletter sent from Verge senior reviewer Victoria Song that dissects and discusses the latest gizmos and potions that swear they're going to change your life. It's an overcast Saturday morning when I give my 12th vial of blood for testing in six weeks. At this point, I feel like a pro.