When it comes to being able to reach your arms overhead (shoulder flexion), there are a couple of nerves that - when under tension - can cause tightness in this range of motion. The two most common troublemakers are the ulnar nerve and the median nerve - because they impact very similar ranges of motion, I’m lumping them together in the same blog post. Let’s learn how to identify if they’re restricting your range of motion, and what to do about it!