"Bodybuilding is 80% nutrition!" But is this really true or is it just another fitness and bodybuilding myth
The first thing I would say is that you cannot separate nutrition and training. The two work together synergistically. Regardless of your goals - gaining muscle, losing fat, athletic conditioning, whatever -you will get less than-optimal or even non-existent results without paying attention paid to both.
In fact, I like to look at gaining muscle or losing fat in three parts - weight training, cardio training and nutrition - with each part like a leg of a three legged stool. pull ANY one of the legs off the stool, and guess what happens?
Nutrition and training are both important, but at certain stages of your training progress, I do believe placing more attention on one component over the other can create larger improvements.
If you're a beginner and you don't posses nutritional knowledge, then mastering nutrition is far more important than training and should become your number one priority. I say this because improving a poor diet can create rapid, quantum leaps in fat loss and muscle building progress.
For example, if you've been skipping meals and only eating 2 times per day, jumping your meal frequency up to 5 or 6 smaller meals a day will transform your physique very rapidly.
If you're still eating lots of processed fats and refined sugars, cutting them out and replacing them with good fats like the omega threes found in fish and unrefined foods like fruits, vegetables and whole grains will make an enormous and noticeable difference in your physique very quickly.
If your diet is low in protein, simply adding a complete protein food like chicken breast, fish or egg whites at each meal will muscle you up fast.
No matter how hard you train or what type of training routine you're on, it's all in vain if you don't provide yourself with the right nutritional support.
In beginners (or in advanced trainees who are still eating poorly), these changes in diet are more likely to result in great improvements than a change in training.