From Sara Haley’s bio:

Sara Haley is a certified trainer and instructor through the American Council on Exercise (ACE) and the Aerobics and Fitness Association of America (AFAA), as well as a certified Pre/Post Natal Exercise Specialist by the American Fitness Professionals & Associates (AFPA). Specializing in functional training, dance methodology and prenatal fitness, Sara has over twenty years of dance and fitness training. She has been a Reebok Global Master Trainer since 2008.

Expecting More is her pregnancy workout which features six different workouts for pregnant women. Sara filmed these video while pregnant.

Working out while pregnant will help not only you, but the baby. Just always make sure to speak with your doctor before doing a workout while pregnant.