The Fitness Integrated Science on-demand subscription service is designed to help you achieve and maintain muscle health. Nationally recognized Muscle Activation Techniques MATRx Full Body Specialist, Certified Yoga Therapist C-IAYT, and Certified Yoga Instructor E-RYT 500 Lauren Eirk, MS provides a thorough, biomechanically-based approach to help your pinpoint your weak areas, correct strength imbalances, reduce pain and inflammation, and restore mobility.