ill tell you from experience, ritalin works for about 4, maybe 5 hours, and then you crash. (from my experience) after the 5th hour or so, i got very depressed, mad, pissed easily, and sometimes violent.

thats why adderall is the new prescription for add. get yourself some 20 or 30 mg XR, and youll be in the best mood of your life, all day long.

as a side note, Adderall and Weed is my #1 favorite combo out of anything ive ever done... (somewhat big list)

but to answer your question.

you feel high, but your brain still works. and the BEST THING OF ALL, when you come up with crazy theories and think youve solved the mysteries of life... you actually REMEMBER IT!

what more can someone ask for?