Has anyone tried this?

I've read a couple of places that taking a little caffeine after between waking up and going back to bed part of WBTB can increase your ability to remain conscious, which is what I'm currently struggling with.

Has anyone tried this? Coffee, chocolate, soda, anything? I can imagine that too much would make it difficult to go back to sleep at all, but I drink too much caffeine as is so I think my body would adapt alright.

I was just wondering if anyone had tried this with any results.