Grandparents have always been important. Today, they're even more important. In busy, two-career and single-parent families, an involved grandparent goes a long way to filling a void for children. In extreme situations, the courts have found it's often a grandparent who can reach a troubled teen when no one else can.
Here's how to enlarge your veins and arteries for plasma donation: 1  Heat up your arm. When veins become overheated, they expand, and draw closer to the skin. 2  Hold off on drinking and smoking. Both smoking and drinking alcoholic beverages makes veins and arteries smaller and harder. 3  Hold off on the caffeine.
A larger vein size makes it easier to donate plasma. But your vein size depends on how hydrated you are, what you've eaten that day, the phlebotomist, how much water you've drunk, your caffeine intake (caffeine can constrict your veins a bit,) and if you've worked out that morning.