I don't want to cause any shitstorms or drama but
>>1367955 is absolutely right. These threads are chubby threads, not healthy threads. /e/ has really taken the term healthy (as /e/ knows it) and run with it. I think it may be because, for example, if OP called it a chubby thread then people would go overboard and post /d/-sized landwhales which is usually what happens when a thread is labeled as a chubby thread. However this doesn't seem to happen as much when they're labeled healthy threads.
Regardless, healthy threads should be what healthy used to mean on /e/, which basically just meant curvaceous (big tits, small waist, wide hips). I think people started confusing healthy with chubby because a lot of times in images with curvaceous girls, they may extra weight or a little bit of a belly. But that's just my 2 cents. And here's a chubby for you.
Also, this post was badly written :(
