Secondly, recitation of Allah's Name will ever remain on their tongues without the least effort like the way we breathe, without any effort whatsoever. In other words the food in Jannah would be so light and fine that there would be no disagreeable urine excrement. On the other hand, there will only be fine smell like that of musk.
Ref.: Imam Al-Nawawi's Riyad-us-Saliheen # 1880.