The "Freshman 15" isn't about weight—it's about the 15 credits Alex is failing. The story arc of Year One centers on the Midterm Meltdown . Alex has to choose between attending Sam’s legendary "Zero Gravity" frat party (which boosts popularity) or studying for Halloway’s impossible History exam (which boosts intelligence).
Regardless of the ending, Alex walks out the front gates of Bloomfield University. They turn back for one last look at Dormitory B, toss their mortar board in the air, and the screen fades to black with the text: