“A modest amount of sleep loss (restricting the time allowed for sleep to 4 hours for one night) reduced natural killer (NK) cell activity to an average of 72%, compared with NK cell activity in participants who had a full night's sleep” [1]<p>In other words even one night of sleep deprivation significantly impairs your immune system. See also, “Sleep is your superpower” <a href="https://ed.ted.com/lessons/BVciktYZ" rel="nofollow">https://ed.ted.com/lessons/BVciktYZ</a><p>[1] <a href="https://www.cdc.gov/niosh/work-hour-training-for-nurses/longhours/mod2/05.html" rel="nofollow">https://www.cdc.gov/niosh/work-hour-training-for-nurses/long...</a>
Main source: <a href="https://www.vox.com/2016/5/23/11704246/wealth-inequality-cartoon" rel="nofollow">https://www.vox.com/2016/5/23/11704246/wealth-inequality-car...</a><p>Most of it was pretty standard, but this one down there was it: <a href="https://cdn.vox-cdn.com/thumbor/DWy_L4Prixt113IHNkhXjA2P3ao=/0x0:1978x1864/1320x0/filters:focal(0x0:1978x1864):format(webp):no_upscale()/cdn.vox-cdn.com/uploads/chorus_asset/file/6524053/8.0.png" rel="nofollow">https://cdn.vox-cdn.com/thumbor/DWy_L4Prixt113IHNkhXjA2P3ao=...</a><p>(what a horrible URL)<p>I expected the top 1% to make 95% of their money off investment and business, but a good number of it is salaries. And I was quite surprised to see that the upper 20% were making more of their income off salaries than before.<p>I had been trying to make profits off investing/businesses at that point, but it made me realize the best ROI might just be getting a better job. At least until I'm in the top 20% and can invest it into something.
All of the data and stats in Hans Rosling's Factfulness.<p>It essentially changed the way I look at data, and more importantly, how to carefully draw the right conclusions. Especially with those reported by regular media.
List of causes of death by rate <a href="https://en.wikipedia.org/wiki/List_of_causes_of_death_by_rate" rel="nofollow">https://en.wikipedia.org/wiki/List_of_causes_of_death_by_rat...</a>