One possible reason for your pain is that your brain perceives lack of flexibility as a threat.
Because from an evolutionary standpoint, if you aren’t mobile enough, you have less chance of survival.
How are you gonna climb up a tree to escape a predator if you can’t even stand up without groaning? 🥲
So your brain enhances your perception of pain as a warning. Because pain is just that: your body telling you “HEY! Do something!”
Or in this case: MOVE!
How interesting? 💡
Now how good is your hip mobility? Try it out with this little challenge!