I think Ditz gave geat advice...poop the little ones out! put them to bed and 1 1/2 hrs later, they will probably sleep easily untill 6am.

Sadly, I disagree with the two comments left before. I have twin girls, almost two (in May), and what parents of singles sometimes don't understand is that there are two of them, one of you. You're outnumbered. I do, however, agree that you should engage them in constructive play, and let them burn their energy in good ways, but what they are probably lacking is structure. Do they take naps at the same time everyday? Eat lunch the same time each day? If not, start. Up at 7, breakfast, something interactive, lunch, then quiet time or nap, whichever, then more play time, or reading, or coloring, something constructive. Also, after they eat, let them play outside together - burning energy. Then put them to bed at the same time each night. If they're in a crib, put them down, shut the light off, no toys, bottles, etc in crib, shut the door and walk away. If they stay up and chatter, so be it. Twins communicate with each other in ways that single children won't and can't understand. It could be that their chatter is their way of winding down. If it's loud, separate them. Put them in separate cribs, on opposite sides of the room. I put my girls down at 8 pm sharp, everynight. They might chatter for a few minutes, but most nights, they lay down, and go to sleep. THe biggest problem with kids that don't sleep all night is they aren't being given a chance to lull themselves back to sleep before Mommy comes in to quiet them. LEave them be, if they realize that no one is coming, they'll go back to sleep. This aside, if they are sick, poopy, etc. I am not suggesting you be neglectful, in the least. Hope that helps!