Be strong. Be Fit. Be happy.

Who our instructors are

Providing a safe, fun and motivating fitness experience 

Casie Kempke

Owner, trainer, instructor

Casie has worked in the fitness industry as a personal trainer and fitness instructor 17 years and after completing her bachelor's of science in Kinesiology at Cal State San Marcos she decided to open Be_Fitness. After building her clientele and out growing her previous place, Be_Fitness moved to its current location in Escondido in 2016. Her passion is to help people become stronger, fitter and happier versions of themselves through safe, fun and challenging workouts. Her goal is for people to leave feeling better than when they came! Casie holds a certification in NASM Personal training, NASM corrective exercise, Pilates and mat exercise, indoor cycling , and is a Level 3 MELT METHOD certified instructor .

In her personal life, Casie enjoys traveling with her son and his girlfriend, training her new puppy, and learning about connective tissue while enjoying the San Diego sunshine as much as possible. 

Renee Sattler

Group Fitness Instructor

Renee has a deep-rooted passion in fitness and helping people stay well and healthy. Through her career as a Registered Nurse, she has learned a lot about wellbeing and the importance of physical exercise and being active. Her own relationship with fitness led her to pursue the AFAA Fitness Cert so that she could better serve clients and their exercise needs. Her goals are to assist clients with becoming healthier and happier, and having fun while doing it! In her free time, Renee loves traveling, hiking, exploring local hangouts and spending time with her husband, daughters and four-legged child. 

Heather Devine

Group Fitness Instructor 

Heather discovered her love of fitness as a teenager and has made exercise an important par of her life for over 35 years. She is enthusiastic about helping to cultivate the feeling of power and strength that everyone has within She recently received her AFAA Group Fitness Instructor certification and Pilates Specialization.

Catch Heather for upcoming Pilates classes and her killer Friday morning bootcamp using the BOSU and the TRX!  

In her free time, Heather enjoys hiking, working in the yard, playing with her dogs and spending time with her family.