Work your abs through a variety of angles to hit as many muscle fibres as possible, and keep tension on your core throughout each set. There, we said it. That’s the training “secret” to building a rock-hard six-pack (so long as you’re paying the same care and attention to your diet as to your training, of course). Do this workout twice a week for a month, increasing the weight or reps each week, and you’ll sculpt lean hard abs.
