The drawbacks of a low-carbohydrate diet for the exercising client, (Consider glycogen stores and intense exercise):

When complex carbohydrates are drastically lowered, the effect will be counterproductive to your training program. Carbohydrates are the primary source of fuel for the body.

In addition to the need to sustain life, carbohydrates will work in your favor for your fitness goals. They are used to sustain and store glycogen. Which is the body’s preferred source of energy. Carbohydrates sustain you and bring you stamina through your workouts. If there is not a sufficient amount of energy stored in the body as glycogen, it can affect you by not having enough energy to complete the training, and or not be able to sustain gains in weight training for hypertrophy.

In conclusion, carbohydrates are essential and only when consumed in amounts above the need of the body’s total energy output do they make you gain weight.