Sleep architecture is frequently ruined by these beverages, which is particularly harmful to teenagers who require consistent rest for cognitive development and physical growth. Because the half-life of caffeine is quite long, an energy drink consumed in the afternoon can still be circulating in the bloodstream late at night, preventing the brain from entering deep REM cycles. This chronic sleep deprivation leads to impaired memory, poor academic performance, and a weakened immune system, leaving the body vulnerable to frequent illnesses.
