How do you know if your six-pack abs grow after a workout?

Is 100 reps of abs exercises a day enough?

Are V lines genetic?

How hard is it to get six-pack abs to show?

Is it OK to do 300 crunches a day?

Can a 70-year-old woman get visible six-pack abs?

Do 12-pack abs exist?

Are six-pack abs hard or soft?

How rare are eight-pack abs?

What is the Multifidus?