It helps so much to analyze other artists' work, with the caveat that you need to know the structure first, like anatomy. I learned so much by looking at still frames from Disney movies. Any kind of practice done without criteria is bad.
The best way to practice is to make personal work, and look at other artists or study from life to find solutions to the problems you couldn't fix.
To understand how artists stylize bodies and copy what they do you need to know the anatomy. If you just copy what they do you won't really understand the reasoning, but if you know what is it that the artist is simplifying and how it relates to IRL anatomy then you can use that solution as a tool for your art.
I do this all the time. Turns out every experienced artist has a different solution for the same problem, so you pick what you like the best or what makes the most sense to you.
This is why anime faces look like shit these days, these guys just copy other artists without understanding the real life framework underneath