Odds and ends

Just 30 minutes of activity over 5 days could save lives

https://www.medicalnewstoday.com/articles/319514.php?sr

How a single bout of exercise instantly protects the heart

https://www.medicalnewstoday.com/articles/320311.php

Reality, What a Concept: Scientists Discover New Form of Matter
https://sputniknews.com/science/201712101059863897-excitonium-existence-discovered/

Facial changes and health

http://www.dailymail.co.uk/health/article-5167211/Four-facial-changes-signal-medical-condition.html

Iron deficiency may raise heart disease risk

https://www.medicalnewstoday.com/articles/318383.php?sr

Flash-mob, Feliz Navidad

https://youtu.be/RD2VuX7ZJzc