Tonicity Fit, LLC All-inclusive Online Personal Training

Sarah Ostroski -

Glen Mills, Pennsylvania 19342

Trains both men and women.

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  • Strength Building
  • Body Building
  • Weight Loss
  • Pilates
  • Body Sculpting
  • Sports Nutrition, Flexibility

Training Locations

  • Online Personal Training Program


  • American College of Sports Medicine (ACSM) Certified Health Fitness Specialist SCW Functional Flexibility Specialty Certification SCW Sports Nutrition Certification SCW Weight Management Certification

Personal Trainer Overview

Tonicity Fit is an all inclusive online personal training POWERHOUSE! This business has been designed to suit any and all of your personal and/or professional fitness needs. Through online personal training programs organized by athlete and ACSM nationally certified Health Fitness Specialist, Sarah Ostroski, you will be provided with the tools necessary to achieve the next level of over all wellness.

Training Philosophy

**COST EFFECTIVE** Tonicity Fit offers a unique opportunity to make POSITIVE PROGRESSIVE GAINS while NOT breaking your bank account! You can choose from three different membership levels to meet your fitness and financial needs! **ELITE** Using this online personal training program will entitle you to EXCLUSIVE workout routines that incorporate PRIME exercise and wellness strategies! **ALL-INCLUSIVE** The Tonicity Fit Online Personal Training program fuses ALL FIVE components of fitness! - Muscular Strength - Muscular Endurance - Cardiovascular Endurance - Flexibility - Body Composition **PERSONAL** All of the Online Personal Training programs available from Tonicity Fit are fully designed and organized by ACSM Health Fitness Specialist, Sarah Ostroski. NOTHING is computer generated! You have email access to your online personal trainer, Sarah Ostroski, and can ask any questions that you might have.


Bachelor of Science in Exercise Science from Eastern University Currently attending: Temple University for a Masters of Kinesiology: Integrative Exercise Physiology


Sarah Ostroski has worked as a personal trainer for over 14 years. She is an American College of Sports Medicine nationally certified Health Fitness Professional. Sarah has a Bachelors of Science in Exercise Science from Eastern University and also holds specialty certifications from SCW in Sports Nutrition, Weight Management and Functional Flexibility. Currently, she is in pursuit of a Masters of Kinesiology with concentration on Exercise Physiology. Sarah has been in the fitness industry for most of her life. As a child, she danced in the styles of tap, jazz and ballet. She also studied Yoga and Pilates to complement her dancing experience. Later in life, Sarah became a runner, and partook in multiple races such as the Miles for Matheny 5K, Rocky Run 5K, Rugged Maniac 5K Mud Run, The Midland Run 15k, 10 Mile Men’s Health Urbanathlon Relay, The Philadelphia Marathon (26.2 Miles) and various other racing events. Since retiring from running, she joined the Trixies Pixies professional bodybuilding sports team, and began her career as a bikini competitor with the NPC. Sarah plans to continue to compete with the NPC for many years to come. Sarah also thoroughly enjoys hiking. Over the last 7 years, she has hiked to the Mauna Kea observatories on the Big Island of Hawaii, Haleakala Volcano in Maui and Rim to Rim across the Grand Canyon. She spends her recreational time hiking state and national American parks with her husband, Mark. They also plan to attempt the Appalachian trail at some point in the future. Sarah is confident that she is qualified and ready to provide you with a diverse online personal training program in order to guide you down your path to health and wellness. And YES, she is also a FULL TIME MOMMY!!