About Karen

Karen Grumbles is a wife and mother of 6 who has worked in and served the Bay Area community in their fitness needs for nearly 30 years. Her instructing passions include increasing strength, balance, flexibility and endurance for every age demographic. Karen holds certifications in various formats such as Yoga, Spin, Step, HIIT, Kickboxing, Boot camp and Bodypump. Through these formats she has the ability to connect with each participant from the novice to the most experienced and have you coming back for more. Karen will now be available for personal training sessions or to answer any fitness related questions you may have. You can also find her offering classes in group exercise. Her overall motivation is to partner with you on your fitness journey to help you stay on track and meet your goals.

About Billy

Billy has 28+ years of experience in the fitness industry. Active in sports as a teen, his love of exercise and nutrition only grew stronger as he developed. Now approaching 50, the satisfaction of mentoring others gives him a sense of accomplishment. Having been certified as a personal fitness trainer since 1993, Billy has had the opportunity of working with many dedicated clients ages ranging from eleven to eighth-one. He believes in his clients and and gives them the confidence to believe in themselves. Billy received a bachelors degree in biology from the University of Houston in 1996. He also maintains an active certification in Adult/Child CPR and Basic First Aid. His unspoken motto is- I’ll Greet you with a smile, Lend you a hand and STRENGTHEN YOUR LIFE!

About Louis

Louis Prunes is a native Texan. He has spent his lifetime being active, staying fit and challenging himself through the years. His hobbies and activities include golf, swimming, diving, martial-arts, competitive racquet ball, jogging with his German Shepherd Dog and overall physical fitness.He trains and has trained males and females of all ages, fitness levels and body shapes. Clients he has trained include high school and college athletes, general population with special needs, body builders, triathlon athletes, law enforcement, and senior citizens who want to gain (or regain) control over their health and enjoy a better quality of life through fitness.Louis is a double-certified Personal Trainer. He graduated in the top five in his class as an “elite trainer” with a diploma from the elite NPTI (National Personal Training Institute), with 500 hours of classroom and hands-on, training (not an Internet certification), and he also holds certification from NASM (National Academy of Sp...

About Ginger

Ginger has a B.S. in Biomedical Science and an M.S. in Fitness and Human Performance. She is a NASM Certified Personal Trainer and also holds certifications from AFAA (Aerobics and Fitness Association of America), Mad Dogg Athletics Spinning®, TRX® suspension training, certified RYT-200 Yoga Instructor, water fitness, and more. Ginger, an athlete in high school and college, has an avid interest in the great outdoors, which includes outdoor cycling, snow skiing, hiking, backpacking/camping and bird watching. She has even gone scuba diving in a cave with sharks! She likes to keep her workouts fun, varied and challenging with upbeat music. She stays current in the latest evidence-based studies on health/fitness and shares pertinent information with her clients and participants in her classes.

About Nicholas

Nicholas is a USPTA certified tennis professional with over ten years of diverse coaching experience. He has previously served as a high school tennis coach for a top 25-ranked 6A program. Nicholas has worked with players of all ages and skill levels, ranging from beginners to Division 1 college athletes. His specialties include stroke production, video analysis, mental game, high-level hitting lessons, and doubles tactics. He is currently a USTA 5.0 level player and serves as a league captain.