Sonja Waterworth


personal trainer & fitness instructor

Sonja grew up playing sports and has always had a passion for physical activity. While in college, Sonja knew that she wanted to study kinesiology and help people become healthy and fit.

Sonja is an ACE-certified Personal Trainer and has her Bachelor of Science degree in Exercise Science, as well as being a certified Spin instructor.  Sonja is also the Activities Trainer for the Napa Sheriff’s Activities League, where she works with young people 12-18 years old.

Sonja has been a personal trainer and spin instructor at HealthQuest since 1996 and has worked with a variety of clients from teens to older adults, developing safe and effective fitness programs. She specializes in exercise routines to improve overall fitness and health, training clients for events, or rehabilitation of injuries.