@RinkyInky I did 23andMe in 2014 and we put the results into Genetic Genie and Livewello but I truly lack the skills to interpret them on my own. One of my doctors interpreted some basics for me and I learned that I am a slow liver detoxer of the CYP2D6 pathway, my Vit D is messed up, etc.
But as far as how it would relate to me not being able to do these leg lifts, I would not have a clue what to look at! All I know is that my brain tells my legs to lift but the max I can actually lift on my own is just my feet off the bed/floor and not the leg.
There are many activities in which I can "force" myself beyond my ability, but this is not one of them, and if you offered me a million dollars, I cannot do the leg lifts (like I cannot pass a spirometry/breathing test) and don't know why.