I know this advice generally gets some eyeballs moving.
I would recommend that if you are trying to learn anatomy or fundamentals, do it traditionally, or at least in high resolution if you plan to continue with art.
I don't see why you would choose pixelart for it.
Do you have a tablet? Get krita and start practicin'.
Don't have a tablet? A cheap pencil and paper is enough to learn anatomy.
You can certainly learn it in any way you want, this is just an opinion/advice, if you will.
That being said, these threads are totally fine, nothing wrong with them. They'll help you learn and grow, too.
Good luck, and sorry for derailing

I'm enjoying your progress, so I thought I'd let you know.