That would be a yes. Codiene actually is a mild opioid that will metabolize in your body to form morphine which then bonds to nervous system receptors. Hydrocodone, which is somewhat synthetic while still being an opioid doesn’t make the shift instead it’s specific products bind to receptors automatically making it much more powerful. These differences are what makes the types of medications easy to distinguish.
Legs don’t matter in the sense that it’s not about haveing strength when it comes to being flexible you just have to have really loose muscles in the joints of you’re hips knees ankles shoulders etc