Figures were provided courtesy of the author except for the following.
Fig. 3. Modified from Noever, R., J. Cronise, and R. A. Relwani. 1995. Using spider-web patterns to determine toxicity. NASA Tech Briefs 19(4):82.
Fig. 9. Modified from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2767184/figure/F1/.
Fig. 10. Modified from http://journals.lww.com/pedorthopaedics/Abstract/2014/03000/Chronic_Lack_of_Sleep_is_Associated_With_Increased.1.aspx.
Fig. 11. Modified from http://www.cbssports.com/nba/news/in-multi-billion-dollar-business-of-nba-sleep-is-the-biggest-debt/.
Fig. 12. Modified from https://www.aaafoundation.org/sites/default/files/AcuteSleepDeprivationCrashRisk.pdf.
Fig. 15. Modified from http://bmjopen.bmj.com/content/2/1/e000850.full.
Fig. 16. Modified from http://www.rand.org/content/dam/rand/pubs/research_reports/RR1700/RR1791/RAND_RR1791.pdf.