Erin Watson

Erin began her fitness journey at age 6 as a swimmer and gymnast and was active in the competitive aspect of both through college. She graduated from Virginia Tech with a Bachelor’s degree in Psychology and a minor in Sociology, where she continued to train and developed a love for training others. Erin began personal training at the YMCA in 2009. In January of 2017, she purchased the pole and aerial fitness studio, DivaFit and began training independently as Optimal Fitness. In 2018, the Optimal Fitness space was opened in Sterling, where she and her team train people of all ages, genders, and skill levels.

Erin teaches her clients spatial and body awareness while stressing proper exercise techniques to avoid injury. She draws from her experience as a gymnast and swimmer to give clients their personalized, optimal workout. She feels that the most important investment is the body and takes pride in helping others achieve their fitness goals. Erin holds a NASM Personal Trainer Certification and holds an ACE Nutrition Specialist Certification.

Brady Hunt

With Brady, every session is a BLAST! He has been involved in fitness for his entire life, and excelled at sports throughout his life. He was inspired by his mother, a personal trainer with decades of experience, who helped him develop a love for fitness and health that continues to guide him through life. He worked for the YMCA for many years before working full-time for Optimal Fitness.

Brady educates his clients on the importance of functional fitness and strength training. His extensive athletic background helps him create unique and effective workouts for his personal training clients that help them reach even their craziest goals! For his classes, Brady is able to keep each workout session fun and exciting to keep clients coming back for more (which is kind of sick, really.) Brady holds an ACE personal trainer certification and is an ACE Sports Performance Specialist.

“My family and I have been attending classes at Optimal for the last 9 months. Erin and Brady are incredible trainers! Their upbeat, friendly personalities will keep you motivated throughout the challenging workouts. They are attentive to everyone in class and will modify the exercise for each individual’s fitness level. The Kids’ Conditioning classes are a great balance of strength, endurance, coordination, and flexibility exercises and games. My children look forward to attending class throughout the week and are very proud of their accomplishments (climbing the rope, increasing their number of pull-ups, getting through more sprints). I’ve noticed a significant difference in myself and my family members since we’ve joined Optimal Fitness. I highly recommend this gym.”


“I enjoy the variety of classes that Optimal Fitness has. I mostly take the strength training and bootcamp classes. Brady and Erin are great at educating you on the proper form and importance of muscle activation for each exercise while making it fun and providing a great workout!  They are mindful of any injuries (past or present) and adapt exercises as needed.

My kids enjoy the youth conditioning class with a mix of games and bodyweight exercises. Brady is great working with the kids and makes it really fun for them!

My husband and I do personal training with Brady. We like how he’ll change up the full body exercises every week. He incorporates different methods like battle ropes and the sled push with weights, core and HIIT to help us meet our goals.

As parents of young children, we appreciate how the gym is a family environment. We are able to have the kids in the lobby area while we’re doing our classes, while easily checking on them whenever we need.

Since being part of the gym in September, I’ve gotten stronger and have had more endurance. I even notice my run times have improved! Erin and Brady ensure the Optimal Fitness environment is fun, encouraging, and motivating. I highly recommend this place!.”


“Erin is the best! I started virtually training with Erin during COVID. Despite having never met in-person, she takes great care in making sure that she’s giving me a killer workout and that I’m making progress towards my goals. She’s very creative with the equipment I have available at home and is attentive to my needs and how I’m feeling. It’s honestly been a great experience and has gotten me back to building strength! Plus it’s fun!”