Can I change a major Freshman Year?

I have lots of conflicting ideas and the applications are coming up!!

I want to do Biology (BS) then Graduate School

But fear that I might change my mind during college. Let’s just say Biology to Biomedical engineering
Is it easy to change major in college?

My profile:
SAT-1710
GPA-3.8 (W)
varsity athlete
community work
other extra-curricular activities