Questions for Thought?

CB: What about ol' school sit-ups? Do you use these? Are they good, bad, or does it "depend"?
MG: Sit-ups are a controversial topic. I don't think they're good or bad per se, but rather "in between". I didn't include them in my program. I simply don't feel they are necessary, and I think there are much more effective abs exercises to focus on. Personally, I almost never do sit-ups except occasionally for a little variety every now and then.
CB: Give us a weekly sample ab training program. How many days per week? What are a couple of the best exercises you'd pick? How many sets? Reps? Rest?
MG: Well, first I'd like to point out that the full body movements that make up the majority of my programs indirectly work the abs and the entire "core" area to a fairly decent extent. However, I do include abs-specific exercises into the routines generally about twice per week. The "abs-specific" portion of the workouts generally only take about 5 minutes at most with very little rest between exercises.
Once people are past the beginning phase of gaining some initial ab strength, I try to get them away from the exercises that are too easy, where someone can do 50 or 100 reps, as is frequently common with standard crunches. Instead, I like to focus on higher resistance exercises that actually stimulate the muscle fibers to a much greater degree. One example of a higher resistance abs exercise is hanging leg raises with a proper "pelvic curl up".
It's funny but usually someone that has been wasting so much time with hundreds of reps of crunches can usually only do a few solid reps when they first attempt some of these higher resistance exercises. We also make sure not to neglect some rotational movements, as well as some work for the deeper muscles like the transversus abdominis.
CB: What do you use for burning fat, intervals or slow cardio? Or both? Any gender differences here? Or differences between fitness levels (beginner vs. advanced)?
MG: In most cases, my answer is definitely intervals... or as I like to call it "variable intensity training". In general, I think slow steady pace cardio is a waste of time, especially if the goal is lasting fat loss.
I think people need to get away from this thinking about "fat burning zones" and calories burned during the actual workout, and look at the bigger picture of what you're doing in your workout to stimulate the greatest metabolic response in your body... and the best metabolic and hormonal response is achieved through variable intensity training and strength training, not slow steady-pace cardio.
Now I will say that if someone is really deconditioned and can't handle higher intensity exercise routines just yet, this still doesn't mean that they can't simply use lower intensity routines, but still use it in a "variable intensity" fashion, by alternating between higher and lower exertion levels throughout the workout.
CB: And finally Mike, 1 or 2 of your top secret nutrition tips for carving out those abs. Open your vault of info!
MG: Well Craig, I think you'd agree that there has never been a more confusing time regarding proper nutrition for consumers. Every so called "expert" out there seems to disagree and contradict each other on what's the best way to eat for fat loss and overall good health.
One of the most important messages I try to teach my readers in this world of heavy confusion is that your diet doesn't need to conform to any of the fad diets... you don't need to go "low carb" or "low fat", or high or low anything for that matter to be successful in losing enough body fat to get lean enough to be able to see your abs. I like to try to simplify things for my readers. I think that balance is the key to success along with eating a diet that is made up of nutrient dense foods in their natural state (as unprocessed as possible).