How long does it take planks to form abs?

yes I've already lost the belly fat, so how long do planks take to form abs? I am exercising by going hiking. I rarely eat junk food. How long and how often should I do planks to get the fastest results?

How to Workout to Lose Weight

Recommended Answer:

This depends on your body type and your diet. I do abs training about 4-5 times a week for at least 15 minutes and I train my lower back as well. Plank is really good to train your midsection, but you need to do other exercises such as sit-ups , crunches etc. Eating the proper nutritions is also crucial. Lower the carbohydrate and eat more protein.