Vocal function exercises (or VFEs) became part of the mainstream of voice therapy for singers, encouraging the development of vocal fold mass and the surrounding tissues to improve the capacity to withstand the effects of an “edgy” singing style. Such a program would, ideally, work with both the physiological function and the acoustic quality needed for high levels of vocal performance and take into account knowledge provided by voice researchers who may be outside the singing experts. The concept underlying VFEs is that taking voice to its limits in singing may encourage a vocal style that is hard on the voice. Using a focused muscle resistance exercise, singing teachers would desensitize the voice to these high resistance levels and assist the voice intolerant of a more significant number of voice cycles before fatiguing. Speech science laboratories started to work with singers, physiotherapists, and voice coaches to design a routine focused on reducing the risk of voice injury based on three key concepts. First, VFEs use a method shown to reverse voice fatigue in occupational voice users. Second, individual exercises mirror aspects of the singer’s vocal load. Third, VFEs integrate muscle-balancing principles developed in muscle injury prevention and rehabilitation literature.