[Chi]

You can also try at home doing some simple exercises like sit ups, push ups, etc.
I went to a gym every Thursday with my friends last year, it was a good ten minute walk, we'd work out doing what I listed, lifting weights, pull ups and using other equipment they had.
Doing that and having a salad with every meal and lemonade, juice, or water, I lost ten pounds in... two months? Either two months or two and half.
But that's what... 8-10 days of working out and having salad with my meals and not soda worked for me.

Like Tenshi said though, that doesn't work for everyone, you need to find what works for you but you seem to be doing good so far.