I was saying rest for the ab muscles
Sometimes persons see good results and think MORE is better, and this IS NOT the case sometimes. Believe it or not one can overtrain the ab core.
I dont think you should train them 7 days a week, or everyday. They need time to repair, and you MAY get better results doing them every other day. Remember msucles grow WHEN THEY REST and repair, and you would be leaving little time for this if done everyday.
Set yourself up a regaular ab routine, I suggest, 3 to 4 times weekly, and progressive overload. I advocate lower reps for the abs (some may disagree as these are endurance muscles).
When I say low (its actually high), meaning 15 to 20 (25). I dont think its necessary, to go beyond 40 reps. As you get stronger, you will be doing 100 eventually. There are various things you can do to keep the reps in the range of up to 25. I train these like any
other muscle, and ad weight to my exercises for progressive overload, and then let them rest. Sometimes Im sore, and sometimes Im not, and soreness is not necessarily an indication you worked them hard (necessarily, I say)