It was hell.
Sources:
https://www.youtube.com/watch?v=0Z760XNy4VM
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1644264/?page=1
https://imprific.com/budkowski/does-calhoun-experiment-reveal-the-condition-of-our-society/
http://www.physicsoflife.pl/dict/calhoun%27s_experiment.html
12:17
1:04:20
10:45
50:44