The American population is sleeping less and less (a 15% increase in people sleeping less than 6 hours per night since 2004), which creates a dangerous sleep debt, comparable to a rubber band that eventually snaps.

noli's read

This observation is based on epidemiological data observed in the United States, notably via CDC surveys (National Health Interview Survey), which confirm a trend toward reduced sleep duration over the last two decades. Scientific research, such as meta-analyses published in 'Sleep', broadly supports the idea that chronic sleep of less than 6 or 7 hours is associated with increased risks to metabolic, cardiovascular, and cognitive health. The rubber band analogy is a vivid metaphor used by Walker to illustrate the human body's limited resilience in the face of prolonged physiological stress from a lack of rest. While the increase in the number of sleep-deprived people is a documented statistical fact, the exact breaking point (the 'snap') varies from one individual to another depending on genetics and lifestyle. Therefore, there is no single universal threshold, but rather an accumulation of solid evidence showing that the body cannot adapt indefinitely to insufficient sleep. The statement is scientifically anchored in the reality of public health trends.

the sources

1. 1Watson NF et al. (AASM & Sleep Research Society) 2015
2. 2Hirshkowitz M et al. (National Sleep Foundation) 2015