My husband and I usually run 3x/week for 3-4 miles per time. In the winter if there is enough snow we will substitute the run with an hour of cross-country skiing. I'm a little concerned that I will not have the stamina to do these long workouts when I am in Phase 1, because most muscle energy comes from glucose. Does anyone have suggestions for keeping my energy up? Some people have said to have a serving of "good" carbs an hour before the workout, as I will use them up in the workout and it will not throw me off track. Others have said just not to do the hard workouts in Phase 1, but that's really not an option. Any words of advice would be appreciated.