This problem has been bugging me for a while, and I've tried many different techniques to try and make it not happen, but no luck yet.

During most of my Lucids, I always get this feeling like I'm really tired, and am about to fall asleep. Its sometimes hard to even keep my eyes open in my Lucids. At times, I try so hard to keep them open, that I accidentally force open my real eyes, ending the dreams. This has happened quite a few times, most recently, last night.

I'm wondering, how common is this, and is there anyway to overcome the problem? This is my biggest stepping stone when it comes retaining Lucidity. I can seem to achieve it easy enough, but hanging onto it, due to this problem, is rather hard.

So, tips?