Have you ever noticed baggy purl stitches in your 2x2 ribbing? Here's a cool trick to tighten them up and make your ribbing pop!
For the first purl stitch of every p2 twist the working yarn clockwise around the front of the needle (opposite direction to normal). This effectively twists the stitch and hugs it in closer to the previous knit stitch. If you're working flat, untwist this stitch on the return row by knitting through the back loop (the twisted purl stitch is now a knit stitch). At the same time keep wrapping every first purl stitch clockwise.
If you're working in the round twist and untwist the same purl stitch by purling through the back loop on the alternate round.
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