Worst time to stay awake was Sunday afternoons in the Summer. The combination of a male voice going on and on , and heat was enough to have me "pushing out the zzzz" in 10 or 15 minutes.....
Latterly I found that taking a larger than suggested dose of high strength caffeine tablets would usually get me through...
It is a common thing though . At conventions one would see lots of sleepyheads. Funny thing is that the experienced ones could still follow the direction to look up scriptures ,correctly, while fast asleep! I have never understood that.
😴