The bacteria in yogurt are harmless to humans: They can't cause infection. During pregnancy, your digestive tract slows down to increase the quantity of nutrition available to your baby, explain Murkoff and Mazel. This can increase your risk of constipation, which can increase your risk of hemorrhoids.
Definition of undulating - having a smoothly rising and falling form or outline Definition of undulating - having a smoothly rising and falling form or outline dictionary
It began to undulate like the threads of a cobweb lifted by the wind. For variety's sake the engineer made it undulate horizontally, like a great serpent flying over the earth. The momentum of his jump carried him in a long swing, and he at once began to undulate himself to increase his swing.