Sorry this pro can’t do your job, but we know other pros who can. Check them out
About
Serious Inquiries Only
I appreciate you taking time to view my profile and consider me as your trainer, I hope I’ll be the one to guide you to your fitness goals. My name is Sim Williams and I’m a Certified Personal Trainer and Performance Coach serving Philadelphia.
I’ve been an advocate for everything fitness for as long as I can remember which is why I created Koa Performance (named after my son). My goal is to help driven adults train like athletes while building strength, endurance and managing weight loss. I have over a decade of experience of one-on-one and small group training, with a background in boxing, powerlifting, distance running and Army physical fitness, just to name a few.
I feel what separates me from most trainers, is not my multiple certification and accolades, but my true passion to spread the importance of health and fitness. I can’t wait to meet you and help you achieve the results you deserve!
Overview
Hired 37 times
Background checked
1 employee
14 years in business
Business hours
SunClosedMon6:00 am - 2:00 pm
Payment methods
This pro accepts payments via Apple Pay, Cash, Credit card, PayPal, Square cash app, Stripe, Venmo, and Zelle.
Customers rated this pro highly for work quality, professionalism, and responsiveness.
Exceptional 5.0
20 reviews
5
100%
4
0%
3
0%
2
0%
1
0%
Your trust means everything to us. Learn about our review guidelines.
Read reviews that mention:
Nikhil K.
Nov 10, 2025
•
Hired on Thumbtack
Sim is an incredible teacher and trainer. He’s patient and instructive, and well-versed his field. He knows how to keep you motivated (while also not screaming at you!). 10/10 would recommend.
Personal Training
Raj M.
Nov 1, 2020
•
Hired on Thumbtack
Sim is a great trainer and beyond that a positive and solid guy. He knows that bodies cannot be built without the right mindset so he brings that into the floor as much as a routine. He has been a great trainer and has designed programs with my goals in mind. He also focuses a lot on fundamentals and teaches you the value of those than just merely lifting. He makes u work hard but have fun along the way!
Personal Training
Joline L.
Mar 4, 2021
•
Hired on Thumbtack
Having Sims as my PT has really changed my perspective on weight loss. He’s been my PT for a little over 3 months now and I am on track to lose the weight that I need in order to get to my goal weight. I know it will be a journey but I can already see and feel a difference. We focus on strength training, HIIT workouts, and a few other workouts tailored to my needs and physical agility. So far I have kept the weight off, which was very hard to do on my own. He pushes me to do my best and feel confident. He’s very respectable, patient, keeps you accountable with your eating and fitness goals. I can always go into every workout knowing that I am going to get a great workout in and hit my goals. He makes it fun and most importantly each workout is tailored to my strengths. A year ago, I thought I would never be able to run again with my injuries, but now I don’t even feel any pain while I workout. I feel much stronger and I always look forward to each session. I am definitely recommending him to all my friends and coworkers!!!! He is definitely a trainer you want to have for long term goals, whether it’s to get stronger or lose weight and just to train. Thank you Sims!!!
Personal Training
Kelly B.
Aug 31, 2022
•
Hired on Thumbtack
I uave been working with Sim for a month and the changes I see and feel are phenomenal. Sim works to your ability and makes the work out work for you. I look forward to more results.
Personal Training
Haoran Z.
May 8, 2023
•
Hired on Thumbtack
I have been working with Sim for the >8 months and I am extremely happy with the results. From the very first session, he made me feel comfortable and motivated to push myself to achieve my fitness goals. It's so convenient that he comes to the gym in my apartment, which saves me time and effort traveling to a gym.
He created a customized workout plan for me that balanced cardio and strength training, and I've seen significant improvement in my overall fitness level.
In addition to his expertise in fitness, I appreciate his knowledge about nutrition, which has been essential in helping me make healthy choices in my diet. Overall, Sim is an exceptional coach who has kept me accountable, motivated and empowered to reach my fitness goals. I highly recommend him to anyone looking for an experienced and supportive personaltrainer.
Personal Training
Credentials
Background Check
Simeon Williams
FAQs
What is your typical process for working with a new customer?
I want to get to know you a little so we can build the best plan possible.
What education and/or training do you have that relates to your work?
-ISSA (International Sports Science Association) Certified Fitness Trainer
-NASM (National Academy of Sports Medicine)
Certified Nutrition Coach
-NASM (National Academy of Sports Medicine) Performance EnhancementSpecialist
-NASM (National Academy of Sports Medicine)
Group Personal Training Specialist
-CrossFit Level 1 Trainer
How did you get started doing this type of work?
I’ve had a strong passion for sports and fitness for as long as I can remember. In high-school, I worked at a Boys & Girls Club. While working there I created a health and fitness program to help spread the importance of fitness and nutrition to the kids of the community. When seeing how great the response was, I was hooked ever since. 11 years later I’m still going strong.
