If your devices only support up to 4K at 60Hz, a "premium high-speed" HDMI cable (18Gbps, HDMI 2.0) is perfectly fine. Again, just avoid really old or thin cables. Early HDMI cables (HDMI 1.4 or older ...
Digital media use—mobile phone, computer, internet, and social media—at nighttime or near bedtime is associated with shorter sleep duration and poorer sleep quality, and it can be especially damaging ...