"Do my MBBS friends actually study last minute, or am I just below average?"

"I'm a first-year MBBS student, and I'm struggling with something. My friends claim they only study one day before exams, yet they still score higher than me. Are they exaggerating, or am I actually below average? I've never been a below-average student before, so this is really messing with my confidence. Has anyone else felt this way? How do you deal with it?"