Eating pasta makes me extremely tired. I want to fall asleep before I'm even done eating it. It's not even that I'm full, like UmeshG is implying. Sometimes, I'll still be pretty hungry.
Pasta is like any other food in making you tired, when you eat something (particularly sweet) your bloodsugar rises. It is the production of serotonin which makes you feel sleepy.
Eating carbohydrates like pasta can increase your blood sugar levels. Having a high blood sugar level can lead to feelings of both satiety and also some tiredness.
No. It's actually the opposite. Eating pasta gives you energy. I have several friends who eat spaghetti or other pasta before going to the gym for a workout. They say it helps them through the muscle building sets.