Here are a few questions to ask when selecting an exercise DVD:

• Am I familiar with the instructor? Is the instructor certified?
• Before I buy it, can I borrow it from a friend or rent it?
• Are there hard-to-believe claims on the case? (Lose 20 pounds in two weeks!)
• Do I have enough space to work out safely?
• Do I need special equipment or props (steps, barbells, stretch rope, chair)?
• Does the DVD fit my needs?
• How do I begin?

Source: American Council on Exercise