Double jointed: what joint hypermobility means, the 9-point Beighton test with age-based cut-offs, links to joint pain and Ehlers-Danlos syndrome, and what helps
Double Jointed: What It Really Means, How to Test It, and When It Matters

Bending your thumb back to touch your forearm, locking your elbows backward or folding your fingers into odd shapes is a classic party trick. People call it being "double jointed".…

What side is your heart on: the heart sits in the center of the chest tilted to the left, why the heartbeat is felt on the left, dextrocardia, chest pain by side, and CPR hand position
What Side Is Your Heart On? Where It Sits and Why It Matters

Put your hand over your heart. If you are like most people, it went to the left side of your chest, the way we do for the pledge or an…