Exposure to light intensities of around 1000 lux later in the day can hinder melatonin production and disrupt the body's clock.

“so if you enter your average seat will say CVS pharmacy or Whole Foods or even gym the light intensity in those environments can often reach a thousand Lux which you know if you're doing that later on in the day it's telling your brain essentially that it's morning and so what that's gonna do is that's gonna hinder melatonin production at a time of day where you really want it to ramp up”