How do you do Kegel exercise?

I had several issues with my pregnancy, and one of the primary concerns I had was not having strong enough hips to support the delivery so I started doing Kegel exercises at my doctors advice. You can even do it as you're going about your day, this article helped me a lot with finding out about my pelvic muscles and how to 'activate' them. http://ph.theasianparent.com/kegel-exercise-for-pregnant-women/