Jun 4, 2014 9:41 AM
In the wise words of Ice Cube: "You can do it, put your back into it." That's literally about all it takes to work a Smartflexx Back Stretching Aid ($30). The curved instrument matches the shape of your spine to stretch your back and relieve built-up tension. It also purports to improve your posture, but who cares about sitting up straight when you can be lying on this godsend instead?