I've heard it's ok to workout abs everyday. Is this true?
Should be treated as any other muscle.....
yes and no. your abs need rest too but it depends on how intense your ab training is. If your doing 3 sets for abs and doing 15 reps you could to upper and lower abs one day,obliques and transverse abdominis (isometric holds) the other day. your endurance muscle fibers dont need rest like your bulky ones