There are three types of exposure procedures. The first is in vivo or "real life." This type exposes the patient to actual fear-inducing situations. For example, if someone fears public speaking, the person may be asked to give a speech to a small group of people. The second type of exposure is imaginal, where patients are asked to imagine a situation that they are afraid of. This procedure is helpful for people who need to confront feared thoughts and memories. The third type of exposure is interoceptive, which may be used for more specific disorders such as panic or post-traumatic stress disorder. Patients confront feared bodily symptoms such as increased heart rate and shortness of breath. All types of exposure may be used together or separately.