Anyway, what I recommend you eat is some form of protein, and some form of complex carb prior to exercising, about 1/2 hour before your
workout or walk...whatever you have chosen to do.
This provides some quick, easily usable energy for your workout, and the protein provides a bit of "oomph" during and after your workout.
Some things you can eat: 1 egg, scrambled and a slice of low cal, whole wheat toast.