No, it would be best if you did not flip the AS1 mattress. Flipping the mattress means sleeping on the bed’s support layer instead of its comfort layer, and when you do this, pressure points are likely to build up across your body. Leaving the mattress flipped for too long may damage the Bio-Pur foam, meaning the mattress won’t feel as comfortable when you return it to its upright position. Instead of flipping the AS1, rotate it every three to six months to even wear.