No, on a TKD you just want enough carbs to fuel your workouts. You eat them immediately prior to leaving for the gym. There are alot of variables. The idea is to burn thorugh those carbs during your workout and to go back into ketosis after finishing. I would experiment. Start with 30 grams or so, and work your way up, until you don't go into ketosis within 2 hours of finishing your workout, then cut them back. It will vary some from workout to workout. Obviously doing 4 sets of squats and 4 sets of leg presses is going to burn far more muscle gycogen than 5 sets of barbell curls. So, you'll have workouts where you might need 90 or 100 grams, and other where you take in 30 etc. You generally want to go with moderate or hi GI carbs though. In and out fast.