Well of course it goes along with a healthy
diet
I took a semester off in college and went to Australia for 6 months. While I was there I became very depressed and stopped eating right and working out.
I had went from 120 lbs to 152 lbs in less than 6 months!
I immediately took action and took 2 swimming classes, one weight training class, one running class, and racquetball and badminton (a little much for one semester), but I was able to lose the 30
pounds I had gained (and keep it off) in 2.5 months!
I guess that's a little more than I would ever suggest to anyone, but it worked for me. After that semester I got away with taking two exercising classes every semester to help me keep the weight off! I felt great!