I'm brand new to knitting and this has helped so much. I am knitting a practice scarf, using sections of garter stitch and small sections of ribbing (k1p1). My question is: why does the yarn pull in at the ribbing sections? It doesn't happen immediately when I switch to ribbing, more like after I switch back to garter stitch I notice that the sections of ribbing kind of develop an hourglass shape. Does that make sense? Can anyone explain why this is happening? Am I doing something wrong? I'm knitting the knit stitches and purling the purl ones--except on the first row, of course, after I switch from garter st, when they're all knit stitches.
Thanks for your help!