![The contents of an effective pre-workout supplement.](https://i0.wp.com/diyhealthplus.com/wp-content/uploads/2021/10/images-8.jpeg?resize=275%2C183&ssl=1)
The contents of an effective pre-workout supplement.
A pre-workout supplement can have different compositions as they are based on various ingredients and have different actions. They are made in a way that will have an effect on you. An effective pre-workout supplement will cause the following reaction on the body.