Colors create biological reactions in our bodies. These reactions, in turn, can change our behavior. In one study, prisoners were put in a pink room, and they underwent a drastic and measurable decrease in muscle strength and hostility within 2.7 seconds. In another study, athletes needling short bursts of energy were exposed to red light. Their muscle strength increased by 13.5 percent, and electrical activity in their arm muscles increased by 5.8 percent. Athletes needing more endurance for longer performances responded best when exposed to blue light. Blue is not a good color for dinnerware, however. Food looks less appetizing when it is served on blue plates, perhaps because few foods in nature are of that color. Other studies have shown that the color green is calming. After London’s Blackfriars Bridge was painted green, the number of suicides decreased by 34 percent. These and other studies clearly demonstrate that color affects not only our moods but our behavior as well (Daniels, 1985).