To avoid your body pillow from going flat, follow the fluffing instructions listed below:
1) Leave the body pillow for some hours: After purchase, leave your body pillow for the next 48-72 hours to fully expand. You can also tap the pillow or shake vigorously up to 5 minutes to help fasten the expansion.
2) Put the pillow in the Dryer with 2 tennis balls: fluff the pillow by placing them in the dryer with two tennis balls. The tennis balls will hit the pillow rigorously thereby fluffing up the filling. Tumble dry low for an hour to make your pillow fluffier and softer.
3) Leave the pillow in the Sun: Leave the pillow in the sun to evaporate the moisture that builds up overnight of usage and the pillow will fluff up over the day. You can also hang it outside on a clothesline.