Skeletal muscle is comprised of different fibres that are bundled together: 

• Slow-twitch fibres: used for endurance.

• Intermediate-twitch type-2A: used when moving a semi-heavy object. 

• Fast-twitch type-2B: the largest fibres, called into action when all-out effort is required (fight or flight). They contract many times faster than slow-twitch fibres and with much greater force, but they fatigue quickly. 

Fast-twitch type-2B fibres are responsible for producing high force, strength, power, and speed. With the largest glycogen storage capacity in the body, they play an important role in processing the carbohydrates that we eat. Lose them, and you become more susceptible to developing insulin resistance, which often results in weight gain and potentially serious health complications. 

Fast-twitch type-2B muscle fibres can only be accessed and maintained through all-out physical effort, which is seldom required in our daily lives—even during regular gym workouts. As a result, we start to lose these fibres in early adulthood. New Element Training sessions, where muscles are trained to failure, are designed to access the entire muscle (including type-2B fibres) to rebuild crucial muscle mass.