While they do not replace the need for vitamins and calcium supplementation, UVB bulbs stimulate more natural behavior and engender a more aggressive feeding response in most arid species. (petbusiness.com)
Studies have shown that a flat or reclined position stimulates more feeding responses from baby. (expressing-mama.com)
To complicate things further, in sitting - up - straight positions to breastfeed, gravity can transform the same inborn feeding responses that should help babies into barriers to breastfeeding. (breastfeedingtoday-llli.org)