Execution in an exercise program is often overlooked. By definition execution is the carrying out of a plan, order, or course of action. In exercise we define execution as the way we perform a movement or particular exercise and the stress that muscle is receiving.
Some will say execution is not important when building muscle or seeing gains in the gym. Primarily because we tend to think adding more load(weight) or increasing the sets/reps will provide us with the biggest gains over time. To some extent this can be true but eventually those gains you are seeing will start to plateau.
Learning proper execution gives you the power to put tension on the target muscle you’re trying to train and guarantee long-term progress with the right programming.