I did not go to medical school, but I worked 40+ hours in my undergraduate and I can say that I would think there's time for hobbies. It might not be ideal time and would be a flexible schedule, but I'm sure there will be time.
Jemima A.’s Answer
All you need to practice is TIME MANAGEMENT.
Medical school doesn't mean you shouldn't get involved or exposed.
Create time for leisures, you can carry out your hobbies during these periods.
But do well to know/note that studying is more paramount...