<p>I had a lot of friends take bio/chem both freshman year. Like others have said, it makes it easier to continue on to the higher level classes (like Organic Chem and Physical chem, and Neuroscience/etc.) in your second/third year instead of putting it off. Two sciences is probably a good limit though, I did honors chem and physics freshman year and the combined workload was quite a lot (but managable, so long as you stay on top of your work).</p>