Kristin Rosenberg

Murrysville, PA 15668-8021

I am an ACE certified Personal Trainer, Health Coach, and Group Fitness Instructor. I have specialty certifications in Behavior Change, Sports Conditioning and Fitness Nutrition.
I am the owner of Fit By Kristin LLC, a Personal Training/Health Coaching business in Murrysville, PA (Eastern PA).
I have over 25 years experience in the fitness industry.
I love what I do, and I wake up every day excited to help my clients get fit and healthy.
My tag line for my business is, "It's not about being skinny. It's about being fit and healthy!"

Verified Cert/Training
IDEA Author/Presenter

About Me


  • Bachelor's Degree, Elementary Education, IUP (Indiana University of Pennsylvania)

Certifications / Trainings

ACE - Certified Group Fitness Instructor
Expires: 2022-08-31 07:00:00 UTC
ACE - Certified Personal Trainer
Expires: 2022-09-30 07:00:00 UTC
ACE - Behavior Change Specialist
ACE - Behavior Change Specialist Program - 2.1 CECs
ACE - Fitness Nutrition Specialist Program - 2.5 CECs
ACE - Sports Conditioning Specialist Program - 2.5 CECs
ACE - Youth Fitness Specialist Program - 2.5 CECs
ACE - Fitness Nutrition Specialist
Not Verified
ACE - Sports Conditioning Specialist
Not Verified
MOSSA - Group Centergy
Not Verified
MOSSA - Group Groove
Not Verified
MOSSA - Group Power
Not Verified
PIA - Pilates Mat 1 Certification
Agency Unavailable

CPR Certified

American Red Cross
Agency Unavailable
Expires: 2019-11-03 07:00:00 UTC

AED Certified

American Red Cross
Agency Unavailable
Expires: 2019-11-03 07:00:00 UTC

Liability Insurance

  • Lockton

Additional Information


$0.00 / hr, Pricing on

Payment Methods

Cash , Credit Cards , Personal Checks

Years Experience


Awards & Accomplishments

Languages Spoken




6 Ratings

5.0 out of 5 Stars

  • by Jennifer Gialloreto on Jan 09, 2018

    “Kristin has not only helped me get back into shape post-baby but she has helped my mom come a long way. From not exercising to working out almost everyday, I have seen a huge change in my mom. I am so appreciative Kristin was able to help her get back into shape. Kristin is not only a great trainer but a wonderful friend and advisor. I am so thankful to have come to know her so well through all of our sessions together and I look forward to many, many, many more!”

    -Jennifer G.

  • by Patrice Smeltzer on Jan 09, 2018

    In April of this year (2017), I was rapidly approaching 60 and hadn’t worked out on a regular basis in 15 years. I have type II diabetes am overweight and have a family history of rheumatoid arthritis. I am not as driven as I used to be and over the years have joined gyms but have not been able to stick to it on my own. I decided that it was time to try a personal trainer. I found Kristin on Thumbtack, sent her a message, and within the next two days I was scheduled to start training twice a week. At our first session, we talked about my goals, which basically was to improve strength and balance, be more active and not end up hurting myself. Kristin had me do some basic exercise and she gave me pointers on posture and basic movement. At the end of the first session, I felt like I worked out but I was not pushed so hard that I did not want to come back which was key for me.

    The thing I like most is that each session is different so I am always challenged and never find it boring or repetitive. Working out with Kristin has ended being the best decision that I could have made and I am lucky that I happened to find her so quickly. Things that I could not do such as getting in and out of the bathtub, walking up and down steps without holding on to a railing, and getting up from the floor, I can do now with ease. These things may not be major accomplishments for some but they are huge milestones for me. I have never felt like Kristin pushed me too far. She consistently encourages me and it drives me to perform. She has taught and continues to teach me how to pay attention to my body and that it will tell me when I can push further or stop.

    I can confidently highly recommend Kristin to anyone who is looking for an effective, energetic, diverse workout.

    -Patrice S.

  • by Sondra Jodkin on Jan 09, 2018

    “Kristin lives up to her logo. Every workout is different, individualized, and fun. Many other personal trainers do the same old thing. Kristin keeps current on the new science of exercise. Her enthusiasm is contagious. I enjoy my workouts because they are fun and meet my needs.”

    -Sondra J.

  • by DIANA FLETCHER on Jan 09, 2018

    I wrote my first review for Kristin 7-21-14. it is January of 2018 and I am still training with her. I have been working with her twice a week for five years and I am so grateful I have her as my trainer! I am stronger, more fit than ever and feel great! Kristin stays informed about all new exercises and equipment, and has so many certifications, I can't keep count. She is professional, encouraging, and an amazing role model for keeping fit and healthy. I will write another review in a few years, because I will still be training with her!

  • by Kelly Haarer on Jan 09, 2018

    “Kristin is my personal trainer. We’ve been doing strength training together since April. I enjoy working out with her (I actually really don’t enjoy exercise at all) but she makes it fun and we always do new things, which keeps it from getting boring. I wish I could work out with her more often but not enough time.”

    -Kelly H.

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