Between home, work, rest, you spend one-third time of your life in bed, so it is important that you choose a bed that gives your body comfort and support your body needs to rest easy. When choosing a new mattress, don't shy away from investing in your rest. Since you spend so much time in bed, it's worth paying for a bigger bed. Also the average person changes sleep position 60-70 times each night. A bigger bed will give you and your partner more room to move comfortably, without rolling on the floor or fighting one another for more space.