Complex sentence: This swaying effect was very soothing and comforting-mimicking the pre-natal sway which babies experience before birth, which in many cases meant that the baby would rock itself back to sleep if it was woken or restless.
Split into simpler sentences: This swaying effect was very soothing and comforting-mimicking the pre-natal sway which babies experience before birth. In many cases, this meant that the baby would rock itself back to sleep if it was woken or restless.