Few days ago I ran into this article that you really must read if you are doing exercises to loose weight or want to burn more fat for the same effort. And it is very easy: stop doing your exercises in the afternoon or evening, instead do your exercises in the morning immediately after you wake up. At that time your body is in the best condition to burn fat. In addition you get an ‘afterburn’ effect you do not get when doing exercises during the evening .
Article: The Secret to Burning Fat Up To 300% Faster