The sound is loud on this short video, but you can see some of the features of sifting.
“Mom” is on her knees on a pillow.
She rests her head on a chair. Her arms are relaxed and her belly is away from the chair. The rebozo cradles the baby. The helper stands close to her hips and lifts her belly upwards before beginning to rock her belly. Start slow and speed up when the mom is comfortable. Slow down before stopping so that the stopping is not abrupt. 2-3 minutes is long enough.
Sifting can be done at any time in pregnancy and between contractions in early and early-active labor.

Come visit the blog. Spinning Babies Blog.