Another study looking at iPhone use in young adults ... Sleep-research organizations still largely recommend people limit screen time before bed. The National Sleep Foundation suggests people ...

So, what's all this screen time actually doing to your body ... participants who spent 4 hours reading e-books before bed for 5 nights produced 55% less melatonin than participants who read ...

I look forward to picking them up rather ... "Our most interesting findings were that this screen time before they got into bed had little impact on sleep that night. However, screen time once ...