Try to find opportunities to pursue research.
Volunteer at your local hospital or low-income clinic. Ask physicians, PAs or other clinical providers if you can shadow them.
During college study for and complete the MCAT. Devote an entire summer to studying for the MCAT and consider paying for a prep course if you can afford it.
My son used MCAT Complete 7-Book Subject Review 2019-2020: Online + Book + 3 Practice Tests (Kaplan Test Prep) Kaplan Test Prep
Kaplan Test Prep
Sold by: Amazon.com Services, Inc
It was about $140 and he achieved his goal score.