I'm scheduled for RNY January 3rd. My concern right now is that I'm able to work out pretty good every day, and getting stronger, more lung capacity for swimming. I'm worried that the 2 week liquid diet and the following months of low calorie will really interfere with this progress. Any advice on how to manage it in a practical manner? I was thinking possibly higher weights, lesser cardio? Right now I'm walking with handweights and swimming laps for an hour.