It's interesting you say that. Before I took life drawing, I did try studying anatomy, but I found the anatomy books intimidating... there seemed to be a huge gap between studying the diagrams and applying what I (had hoped I'd) learned to my next drawing.
When I took life drawing, though, my ability to simply draw people skyrocketed. Now it's probably time for me to go back and study anatomy, but life drawing was, I think, really the best "anatomy crash course" I could have gotten. (And I intend to go on taking life drawing forever.)
Naw man, unless you've got an invested interest in anatomy or want to actually draw skeletons or muscle (if you're into zombies or gore, this would be very important!)... I don't think it's a important as life drawing. That gets you learning proportion and movement and weight, etc. So draw as many people are you can! ^o^