The only timing I would consider is the following:- Whatever body part you want to grow the most, exercise it right before the Carb Nite.- If you are performance oriented, have your most intense training session the day after the Carb Nite. For example if you are a powerlifter, have max effort days the day after the Carb Nite.- If you do HIIT, do that the day after the Carb Nite.As you can see, the time of the day isn't too important, it's really about using the carb consumption on Carb Nite to your advantage. With CBL we are more interested in how things vary on a scale of one day, with CNS we are more concerned with how things vary on the scale of a week.