Anyone else find themselves dozing off when playing a game they're interested in beating?
Resonance of Fate, I like the game(interesting world, really beautiful CG, awesome JP voice actors, and the cute characters which you can dress up

) but I get sleepy after a dungeon or two

.
Etrian Odyssey 3, awesome game I love my parties, the art, and soundtrack but I doze while taking the longass walk to the lastboss(who proceeds to own my party even though theyre all lvl 70max)
Z.H.P. Unlosing Ranger VS Darkdeath Evilman(what I'm currently playing), its pretty funny and interesting to see what happens next but I get knocked out cold after a dungeon(or during if I'm lying down while using my psp)

.
Cross Edge..... I made it to the last boss in Cross Edge before learning IF(ideafactory) loves having endings labeled as "true ending" which require some really obscure method to obtain(ex. don't attack certain bosses ever, or view events in a certain order etc...) So 8 months after I finished raging I decided to try again, now I can barely stay awake for 40 minutes while playing it(even with all my love for Razeluxe and Lily T_T). I even downloaded all the powerful gear to make it as fast and easy as possible but I still doze off.
So to reiterate anyone else have this problem XD? and if so any tips to battle the sleepyness?