A crunch exercise is a type of physical activity that involves lying on your back, bending your knees, and raising your upper body towards your lower body. It helps strengthen the abdominal muscles. Full definition
The age - old question in bodybuilding is whether it is better to do crunch exercises in a slow and controlled manner, or at faster speeds. (fitnessandpower.com)
Inundated with dire warnings of another decade of very poor returns based on these mindless number crunching exercises, many investors are fleeing equities in favor of other, perhaps even uncharacteristically more risky, investments like long - term bonds when interest rates are at their lowest levels in decades. (seekingalpha.com)
All of your core muscles are used during the Reverse crunch exercise including: rectus abdominus, transverse abdominals, lower back extensors, and even a slight use of the obliques abdominals groups. (directlyfitness.com)