About EMS

Charge Fitness - June 2 2019. Photo by  Coastal Creative Victoria-39087.jpg

How Does EMS Work?

The Contraction

Typically nerve impulses originate in the brain and travel along your nerves up to the motor end plates—the junction between nerves and muscles. From there, the impulses release neurochemicals that cause muscle fibres to shorten and your muscles to contract as a result. EMS electrodes transmit electrical impulses through the skin which stimulate motor nerves to signal the muscles to contract as well.  Whether these signals originate from your nervous system or from the EMS system, both result in your muscles contracting—only the contractions from the EMS system can be made to be stronger and longer lasting.

More muscle recruitment

During your workout opposing muscles are stimulated at the same time, which means that you activate 90% of the whole muscle loop between two electrodes, including the deep muscle layers.

There are two muscle types involved in your natural everyday movements and the physical training of your body:

Type 1 muscle fibres (slow twitch)

During normal day-to-day movement, type 1 fibres are activated for functions such as posture and balance. They are also the primary fibres used for a long duration exercise such as running a marathon.

Type 2 muscle fibres (fast twitch)

Type 2 muscle fibres are more relevant when training in the gym, or when there is a required demand for more power and speed. The demand of the body to train these fibres can be taxing, especially to those of us which suffer from injury.

EMS training activates both types of muscle fibres from the very beginning and in no particular order.


Compared to conventional strength training EMS activates nearly all of your motor units at the same time. This means you can effectively train up to 10 major muscle groups simultaneously, compared to a typical gym session where muscle groups are trained one after another.