Sleeping less than the designated 7 to 8 hours a night can leave a person at a physical and mental deficit. This deficit over time can translate into a "48% greater chance of developing or dying from heart disease and a 15% greater chance of developing or dying from a stroke" for those who sleep less than six hours (2017, European Heart Journal). Personal risk is not the only effect of sleep deficiencies. When on the job with six hours of sleep or fewer, individuals reduce their physical response time, leading to accidents in the transportation industry. The National Transportation Safety Board (NTSB) identifies that 52% of 107 heavy truck crashes had related fatigue factors. On the marine side, the U.S. Coast Guard has reported that fatigue contributed to 16% of critical vessel casualties and 33% of personnel injuries.
展开▼
