Tried to do a 12 hour Gundam marathon and fell asleep during episode 3

So last Saturday I decided to finally binge the original Mobile Suit Gundam series in one sitting, made a whole pot of coffee and everything. Passed out cold during episode 3 when Amuro first gets in the cockpit, woke up at 2am with the menu screen looping and my cat sitting on my chest. I think the problem is I went in expecting nonstop action like the newer shows but the original has a way slower burn with all the politics and colony stuff. Now I'm rewatching it one disc a night and catching way more of the Char rivalry stuff I completely missed. Anyone else have a classic series they had to pace themselves through instead of binging?