It's strange, isn't it? The answer is so simple. An average of 15 minutes strenuous exercise a day. Don't over-excercise; don't under-excercise. That's about it. You can eat or drink everything you would like. Just get off your behind for at least 15 minutes a day.
In my experience, what and how much I eat is just as important as what and how much I exercise.
15 minutes seems too low to say you can eat "everything".
I had an idea for combining a treadmill with Google Earth Street View.
I've been on a stationary bike that has something like that - you could pick from bike trails all over the world. The speed in simulation was tied to how fast you peddled and the resistance was tied to the hills in the simulation. It was pretty cool - I rode on some mountainous trail in Australia and another time it was some town in Morocco, iirc.