Sidebar loop overwrites main loop

When you use multiple loops – like a custom loop in your side bar, it may overwrite your main loop… After troubleshooting where the problem was occurring and trying rewind_loop() unsuccessfully I found that starting a new loop would do the trick…

while (have_posts()) : the_post();
   //the_content() was getting overwritten when by itself
   //but when enclosed with the while() statement
   //it works properly
   the_content();
endwhile;

This works, but Im not sure if this is best practice, if you have any follow up suggestions feel free to post…