<p>It seems most students do take about 15 hours. However, a word of warning. The first semester is a big adjustment. If you are taking heavy science/lab classes–keep it light. The science class may be only 4 hours, but it is worth much more than that time wise. A friend who used to be a premed advisor said that the biggest mistake he saw freshmen premeds make was doubling up on lab classes—they got too overloaded and stressed out to start their college days on a positive track whether it be academically or psychologicallly.</p>