After an Effective Introduction Where the Audience Seemed Totally Involved

Essay

After an effective introduction where the audience seemed totally involved, Jessica noticed that she lost her audience quite quickly. People were fidgeting, reading other materials, and a few even left the room. Jessica decided it was the fact that the meeting was held after lunch and people ate too much and got sleepy. Rather than blame the timing (or the buffet table), what advice would you offer Jessica to keep the audience's attention during a presentation?