: A "genius" exercise that uses reciprocal inhibition. By contracting your hamstrings (digging your heels in), you neurologically "turn off" the hip flexors, forcing the abs to do 100% of the work. The "Hiss" (Power Breathing)
Visible abs require a low body fat percentage. For most people, this means a body fat percentage of around 10-15% for men and 15-20% for women. hardstyle abs pavel pdf