140 lbs is still a normal healthy weight for someone your height . I would also like to point out that it ' s normal for us to fill out a bit as we transition into adults . Our hips widen the actual bones , our metabolism changes . You can lose the weight , but it ' s going to take constant diligence to maintain . In general , eating at a caloric deficit is going to be more important than your exercise routine for weight loss . That being said , it ' s very hard to actually eat at a deficit if you ' re not actually tracking calories . Even healthy calories add up . You don ' t mention it , but one major factor for weight gain in college is alcohol . Alcohol itself is very high calorie , and it is usually mixed into other sugary drinks . Several drinks later , and you ' ve consumed 100 s of extra calories .