Deep Fitness shows us that 30-minutes of focused and intensive resistance training sessions done as little as once or twice a week can have an enormous effect on our health, sense of well-being, and longevity. Shepherd and Yakovenko have designed a revolutionary workout technology known as Mindful Strength Training to Failure (MSTF). Similar to high-intensity interval training, users choose from a variety of resistance sources: barbells, kettlebells, machines, elastic band, or individual body weight. MSTF targets specific muscle groups, working them slowly to the point of momentary muscle failure. With proper resistance, sets can be done in as little as two minutes, and do not require repetition. The controlled pace of the workout routines also make it ideal for older adults as well as those managing injuries.