I am a vegan and I bike around 10 miles to and fro from office everyday. After biking to office, I find myself in a low energy state which persists all through the day. I tried having couple of bananas right after I reach office and although it does improve a bit, I still feel low in energy. Also I am losing weight steadily. What sort of foods do you eat before/after biking to ensure that you are in high energy state all through the day?