Self-objectification can increase in situations which heighten the awareness of an individual's physical appearance. He used saturated color to heighten contrast and create mood. Incense is thought to heighten sexual desires and sexual attraction. Sex dice is a dice game intended to heighten the sexual atmosphere and promote foreplay. This juxtaposition can greatly heighten the time-lapse illusion. Symbolic cues can also heighten a group's cohesiveness. When the Wart touches the sword, his senses heighten. Two other diagonal lines are used to heighten the dramatic tension. The timpani further heighten the tension in the coda before the cadenza. Exposure to mold may heighten sensitivity, depending on the time and nature of exposure. Supermarkets offer taste testers to heighten the sensory experience of brands. Others worked to heighten morale and overcome bottlenecks, particularly in war-related industries. Douglass regularly slightly sped up the laughter to heighten the effect. Hitchcock and costume designer Edith Head used color to heighten emotion. The faster tempo was important as it would heighten energy levels at their shows.