Yeah, 20 minutes of biking each way isnt a lot of calorie burning. However, its a great start. I think you need to focus on diet change. Its really difficult and I suggest cutting out the nasty foods a little bit at a time. You need to find what works for you

I weighed in at 243 before I started to try and lose weight. A few years later and I weigh around 180. I have gained a lot of muscle mass as well so ive lost a lot of fat. I still have to count calories but thats okay. The way I see it is that now know alot of about healthy diets and Ive helped a lot of other people with my knowledge.. I am also a personal trainer too.

Anyone can do it, but you have to keep yourself motivated and dont kill yourself for slipups. If you need any advice on your diet etc, feel free to throw me an email and ill help ya out (marklegear@gmail.com)

G luck!