It depends on whether or not you are a male or female. And if your vaccines are all up to date. Generally they don't do vaginal exams on guys, and they don't have females turn their heads and cough. For the most part it is a pain free process, but if your vaccines aren't up to date they might give you a shot.
ok for my 17 year old sons sports physical they check his vision, he had to pee in a cup for drug testing and protein levels, did a blood draw for a white cell count, they did an ekg to check his heart, check for open sores or wounds on the entire body, they ask questions like how have you been feeling, and do you feel safe at home, they checked for a hernia. This is was very extensive physical to play football, do weight training and wrestle in high school. Yours may be different, but is should only take an hour at the doctor.