What is the cause and what is the effect in the following quote? "Because I woke every day at 7:00 A. M. (in spring, this was four or five hours after sunrise), I was exhausted by 11:00 P. M. You need a good night’s sleep to be ready for another exciting day on Palmer Station!"

Ivansanger rainsfordgeneral zaroffwhitneyadventurous hunter; calm and composed; considers himself a realist; new yorker; veteran of world war ia hunter; sympathetic to the plight of voiceless, defenseless animals; cautiouscossack; mute; formidable physical stature; wears a black uniform; used to whip prisoners for the great white czarcossack; aristocrat; has sharp, pointed teeth and red lips; devoid of humanity and emotion