The New Science of Sleep and Dreams | Professor Matthew Walker

What's inside a black hole? Is consciousness something we can measure? Where did life itself come from? How To Academy Science is a new channel from How To Academy. Subscribe today: http://www.youtube.com/channel/UC3cHvU3uO2ZSRE4ExlS0MGg?sub_confirmation=1 Sleep is one of the most important aspects of our life, health and longevity and yet it is increasingly neglected in twenty-first-century society, with devastating consequences: every major disease in the developed world - Alzheimer's, cancer, obesity, diabetes - has very strong causal links to deficient sleep. In this talk, Professor Matthew Walker explores twenty years of cutting-edge research to solve the mystery of why sleep matters. Looking at creatures from across the animal kingdom as well as major human studies, he delves into everything from what really happens during REM sleep to how caffeine and alcohol affect sleep and why our sleep patterns change across a lifetime, transforming our appreciation of the extraordinary phenomenon that safeguards our existence. 0:00 – Intro 00:02:19 – How Sleep Impacts memory & learning 00:07:15 – How Sleep gives you Dementia & Alzheimers 00:10:53 – Short sleep causes sickness. 00:16:40 – How to sleep better. 00:20:36 – Is it too late to sleep well? 00:23:00 – Too anxious or wired to sleep? 00:26:57 – Sleeping Pills, Caffeine & Alcohol 00:33:46 – Quantitative Vs Qualitative Sleep? 00:37:50 – Modern Technology vs Sleep 00:41:00 – Why Roger Federer Sleeps 12 hours a day 00:44:20 – Sleep Culture must change 00:47:52 – Letting your children Sleep! 00:50:50 – Audience Questions