Smartphones are not exactly great for inducing good sleep, being packed with apps both for entertainment and work - giving you two reasons to stay awake.The blue artificial light from phone screens can also disrupt our body clocks, a Harvard study found in 2014, making it difficult to sleep.A 2019 Saudi Arabian study among medical staff found that 92.4 percent of people use smartphones just before bed, and that people who do so are twice as likely to sleep badly.
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