NO!
Why not, you might ask?
First, your body prefers energy in the form of glucose, which is more easily obtained from carbohydrates rather than protein.
In contrast to carbohydrates, protein has vital structural purposes, whereas carbs are broken down to glucose to be used for energy. However, if carbs and fat are absent, then protein can be used as the LAST resort to provide energy. Protein is broken down from your body's muscles and tissues in order to keep you alive! (also known as wasting: using protein stores for energy) This is why low-carb diets aren't the best. Your brain and red blood cells need glucose to function!
Protein is composed of polypeptides which contain amino acids joined together by peptide bonds (created from the carboxyl group of an amino acid to the methyl group of another amino acid). Because of these bonds and the overall structure most remotely similar to glucose, it is very costly (energy wise) to obtain energy from protein.
Plus, eating too much protein just adds more calories, and if you don't intend on using all of the energy (calories) during your workout, that energy will be stored for later usage! This means you could possibly gain weight, if you have a positive energy intake. Also, there are some dangers of high protein intake, whether it be from supplements or food. As a result of too much protein, you could be dehydrated and cause a difficulty in absorption of other essential amino acids.
Blah, blah, blah. Lots of words, I know, but basically, if you want to provide your body with energy before a workout, carbs are the way to go! Have some yogurt or a banana or oatmeal or a piece of whole grain toast or pretzels!
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