Ann Crews

I love to inspire people to have fun and keep moving that body!

Certifications

ACE Certified | AFAA Certified | MadDogg Cycling | Keiser Cycling | United States Water Fitness | Silver Sneakers | CPR/AED
> Warrington
Barbara Weikamp

Barbara Weikamp

"The greatest good you can do for another is not just to share our riches, but to reveal to him his own." - Benjamin Disreali

Certifications

Ananda Chakra Yoga and Teacher Training | Yoga adjustments course with David Swenson | AEA Practical Pilates | AAAI Pilates Mat II | Shaitsu Massage Therapist with studies in Qui Gong, Do In, Mantak Chia's work | USWFA | AFAA Group Ex | Silver Sneakers
> The Treehouse > Warrington

Brian C. Ross

As an athlete and competitive swimmer of 12 years, I believe that fitness is an important part of every well-rounded individual. It is my goal to instill all my students with a lifelong love of both fitness and swimming, while making sure that they stay safe, learn proper technique, and have fun!
> Warrington
Brittany Thompson

Brittany Thompson

I truly love being in an environment that promotes a positive and healthy lifestyle!

Certifications

CPR | First Aid | AED
> Warrington

Brynne Mulloy

I enjoy being active because it makes me become more productive and feel better about myself.

Certifications

Red Cross Lifeguard Certification
> Warrington
Cathy Manning

Cathy Manning

I have been active my whole life. Physical fitness is important to me and to my family. I believe that staying active keeps you young. My main goal as a group exercise instructor is to provide my class members with the knowledge, confidence, and encouragement that leads them to embrace a healthier lifestyle. I emphasize that knowledge is power and instruct my class members not only the correct and safe way to exercise but also to understand WHY and HOW they are exercising and hopefully have fun doing it. I enjoy being a part of someone's journey to discover their inner athlete. Move It or Lose It!

Certifications

BS Communications | CPR/First Aid | AAAI Group Fitness | AAAI Certified Personal Trainer | AAAI Aqua Fitness | Les Mills Body Pump | Cancer Wellness Personal Trainer
> Warrington
Colleen Strong

Colleen Strong

I believe that being positive with every interaction shines through every day!

Certifications

Certified CPR | Master Instructor | Trainer USWFA
> Warrington

Dot Maybaum Aquatics Fitness Orientations

"If you don't take care of your body, where will you live?" Everyone can achieve their own personal fitness goals in the pool-whether it is recovering from joint replacement or training for an Iron Man-whether you are a year old or learning to swim for the first time at age 100-whether you swim laps or play volleyball in the pool...the pool is a fantastic place to start, maintain or improve your physical fitness! As a guard, swim instructor and water group exercise instructor, I have been constantly inspired listening to stories of physical fitness achievements. I hope to inspire you to have a great class and a healthy body.

Certifications

AEA Aquatic Fitness Professional |American Red Cross Lifeguard | Blood Borne Pathogen Training | Specialized Training In Darkness to Light Child Abuse/Suicide Prevention and Crisis Management | CPE/AED
> Warrington

Gabrielle Bak

I loved to be in the water ever since I was younger. I really want to help people stay safe in the water.

Certifications

Lifeguard Certification | CPR Certification
> Warrington
Heather Costigan

Heather Costigan

I have 8 years experience in the fitness industry and have been at Cornerstone for 5 years. In addition to Group Exercise, I also teach Swim Lessons.

Certifications

AFAA Primary Group Ex. Cert., BTS Group Kick, CPR
> Doylestown > Warrington
Heather Wauls

Heather Wauls Group Exercise Director

Tribe Coach at Warrington. I've been working in the fitness industry for 15+ years and have been at the Warrington location since 2005, prior to Cornerstone's ownership. I have seen fitness trends come and go but one thing never changes- once you engage in a healthy, active lifestyle it is more about weight loss or looking good. It is about feeling good, both mentally and physically. Don't underestimate yourself, have confidence in your capabilities. You are stronger than you believe, and you'll never know whether you can do something unless you try.

Certifications

ACSM-HFS Health Fitness Specialist | AEA-AFP Aquatic Fitness Professional | AFAA Group Exercise Certification | Mad Dogg Spinning Certified | BS in Kinesiology | Penn State University | CPR/First Aid/AED Certified | SMRT-Core | Trigger Point Performance Therapy | TRX Level 1 | Pilates Mat Certified
> Warrington
Jan Yerkes-Roop

Jan Yerkes-Roop

My philosophy is a happy body equals a happy mind. I want people to enjoy an activity that gives them a sense of fulfillment. Swimming and running are activities that most can enjoy throughout their whole life! I look forward to teaching aquatics and coaching the Cornerstone Running Club. My love for both has led to me competing in Triathlons!

Certifications

Liberal Arts degree obtained from Villanova University |Athletic College Scholarship for Cross Country and Indoor Track |Certified Lifeguard |CPR/AED
> Warrington
Janelle Coller

Janelle Coller General Manager, Warrington

Use it or lose it is absolutely true! So get moving every day! You can add so much to the quality of your life by keeping fitness simple and fun. Stop trying to do exercises that you dread and start doing activities that you love. Walk your dog, dance with your spouse, play tag with your kids and get hooked on group exercise when you join Cornerstone. Make us your second home!

Certifications

B.S. Kinesiology | Fitness Specialist | AFAA Group Exercise Instructor | SCW Aquatic Fitness Professional
> Warrington
Jessica Danielewicz

Jessica Danielewicz

My goal as a lifeguard is to keep our members healthy and safe while having fun at the Cornerstone pool facilities. I enjoy running, Zumba and learning about public health.
> Warrington
Julie Crews

Julie Crews

I have lifeguarded for over two years and enjoying meeting all the swimmers at Cornerstone and teaching kids as a swim instructor. My focus is always safety! I enjoy working out, running and reading.

Certifications

Lifeguard Certified |CPR/AED |First Aid
> Warrington
Kathleen Mastropietro

Kathleen Mastropietro

Motivation is the key to your success. Our job is to help motivate you to be the best that you can be. The Aquatic environment is a wonderful tool for improving flexibility, strength, stabilization, balance and coordination all while having fun. I will help you find something you love and your life will be longer and fuller because you enjoy doing it.

Certifications

AEA (Aquatic Exercise Assoc) | AFAA (Aerobics & Fitness Association of America) Group Exercise Instructor | Silver Splash / Silver Sneakers | CPR | AED & First Aid Certified
> Warrington
Mary Jane Mims

Mary Jane Mims

I beleive exercise is one of the most important things you can do to make your life better. Aquatic exercise helps improve your balance, coordination, flexibility, and strength all while being challenging and fun.

Certifications

AEA Aquatic Professional | CPR
> Warrington
Megan Mattingly

Megan Mattingly Aquatics Director

Did you know that swimming is a lifelong activity and survival skill? We have the opportunity to learn as children and like riding a bike, we never forget. Swimming can be done with friends or alone, for exercise or just for the pure enjoyment of it. A skill we can teach our children and an activity we can do anywhere. Swimming can absolutely be the BEST part of your day and I love that we can offer that opportunity to you. So stop by, enjoy our lap pool, healing pool, and hot tub. Bring your family in for family swim and challenge yourself to a cardio workout that has no comparison and while you’re here make sure to say hello!

Certifications

BA in Psychology | LGI, LG, WSI | CPR-AED & First Aid | Emergency Oxygen Administration | Bloodborne Pathogens Darkness to Light Trainer | Certified Lifeguard Instructor |Member Cornerstone Safety Committee | Child Abuse Prevention

Rachel Pullar

I have been an employee and swim instructor at Cornerstone for seven years. My biggest passion and motivation is to teach and inspire children enjoy the water and to be better versions of themselves, inside and outside of the pool. My love for teaching children started with Cornerstone and motivated me to get my Masters in Elementary Education and I am now a substitute elementary school teacher!

Certifications

BA Temple University | Masters of Elementary Education from Holy Family |Lifeguard Certified |CPR/AED
> Warrington
Ryan Adalbert

Ryan Adalbert

Lifeguard and Swim Instructor

Certifications

Lifeguard Certification |CPR/AED
> Warrington
Sharon Kennedy

Sharon Kennedy

I believe balance is essential to a healthy lifestyle. Combining good nutrition with exercise every day is going to contribute to a much better state of health when it comes to your mind. Living healthy will build your immune system, strengthen your mind and body and make you a stronger, more confident person. Treat others well and give back to the environment and community by supporting local businesses and eat more natural foods.

Certifications

CNA Certification | Lifeguard Certification | CPR Certification | Swim Instructor
> Warrington
Shawn Marie Baker

Shawn Marie Baker

Join today and you will become part of something very special. Cornerstone is more than a fitness center. It's a magical place that uses fitness to connect you, inspire you, and motivate you to achieve your goals and dreams. Mission Possible at Cornerstone, your hometown club!

Certifications

NASM-CPT | ACSM | TTI- Advanced Behavior Management and Values Certified | ATC- Low Ropes Adventure Course Certified | SCW Aquatic Exercise Specialist | Arthritis Health & Fitness Certified
> Doylestown > Warrington

Find a Class

Aquatics

Swimming is a healthy activity that can be continued for a lifetime. Dive in to Cornerstone's Aquatics today!

> Lap Pool Schedule

> Swim Lessons

> Polices & Procedures

> read more

Aquatic Directors

Megan Mattingly
Aquatics Director


Jessica Dull
Assistant Aquatic Director

> Contact Us