What are the best sources of carbohydrates for muscle building?
For muscle building, the best sources of carbohydrates are complex carbohydrates. These include foods like whole grains, brown rice, quinoa, sweet potatoes, and beans. They provide a steady release of energy, are rich in vitamins and minerals, and help promote muscle growth and recovery.

It's also important to consider the timing of your carbohydrate intake. Consuming carbohydrates around your workout can provide energy for your muscles, while post-workout carbohydrates can help with muscle recovery and repair.
As an elite athletic coach, I recommend consuming complex carbohydrates such as whole grains, fruits, vegetables, and legumes for muscle building. These sources of carbohydrates will provide sustained energy throughout your workouts and aid in muscle recovery.