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ACE certified personal trainer

Seth Stangler lightening bolt

Verified 4 Reviews
vaccinated COVID-19 Vaccinated

About Seth

You don’t have to be better than anyone else, you just have to be better Than Before. I started Than Before Fitness, LLC because I believe everyone is capable of self-improvement. This includes becoming stronger, fitter, healthier, and happier...THAN BEFORE. I offer both in-person and online fitness coaching. I specialize in building muscle, fat loss, mobility, and even athletic performance. I have played sports my entire life and transitioned to a life of fitness after recovering from an ACL tear surgery. I am willing to work with anyone!



Areas of Expertise

  • Nutrition
  • Strength Training
  • Muscular Definition
  • Muscle Gain
  • Sports Performance Training

NCCA Accredited Certifications

ace certification ACE Certified Personal Trainer


BS in Health Promotion & Wellness

Who I Especially Like Working With

Beginners, Bodybuilders, Overweight/ Obese, Student-athletes, Youth

Medical Conditions Experience

ACL tear, Anxiety, Bad Posture, Diabetes, Limited Mobility

2801 Grant Avenue

Philadelphia, PA 19114

No Gym Membership Needed!

Seth is an all around good trainer, but the best thing about him is he proves to be trusting with what he does for your workout goal. He guides you in a great direction & is available to questions around the clock. I still continue my journey to stay at my goal & he keeps workouts interesting & fun not the same boring stuff every workout. My younger brother workouts with seth as well. I’d recommend him to anyone!

Cailey P.

Great coaching style, strives to find what works for you instead of forcing you into a routine you can’t stick to. In person session provide excellent motivation on top of self-accountability gained through online coaching. Teaches nutrition principles instead of just providing a meal plan.


Seth is awesome. He starts by first understanding your goals and building a workout routine around that. He sets up a plan and keeps motivating you each session. He’s very patient, making sure your form is correct, and also keeps you updated with your progress along the way. Would highly recommend!

Ryan F.

Great trainer, accountable and patient.

Tattvamasi P.

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