Yep, pretty much.
The Lateral Heal (the outside head) you’re bascially on only one leg with all your body weight on that leg - It typically hurts like all Buggery.
To get used to it, basicaly my legs were shocking, i had to use Two foam rollers to take the pressure off a bit. I can now use a Mediball most times it is now that much better.
John is correct, IF you cannot do Over’s n Unders, then you’re too tight.