Q: What foods are bad for the muscular system?

A: There's no foods that are bad specifically for your muscles, but all the usual suspects that hurt your overall health -- junk food, sweets, sodas, alcohol, etc -- will end up hurting your muscular development too in the long run. So whether it is for your overall health or specifically to build muscles you want to eat healthy nutritious foods: lots of vegetables, whole grains, fruits, lean meat/fish/poultry, healthy fats like olive oil and nuts. Most cooking methods are fine with the big exception of frying (and especially deep-frying, of course). If you are specifically looking to gain new muscle, then you'll want to make sure your diet includes lots of protein in every meal. But in general, the same foods that are good for your health are also good for your muscles. Check out my Diet article for more info.