The night sky

TL;DR :
Both high and low percentages of carbohydrate diets (respectively >70% and <40% of calorie intake coming from carbohydrates) were associated with increased mortality, with minimal risk observed at 50–55% carbohydrate intake.
Low carbohydrate dietary patterns favouring animal-derived protein and fat sources, from sources such as lamb, beef, pork, and chicken, were associated with higher mortality, whereas those that favoured plant-derived protein and fat intake, from sources such as vegetables, nuts, peanut butter, and whole-grain breads, were associated with lower mortality, suggesting that the source of food notably modifies the association between carbohydrate intake and mortality.

TIL que "flapping" se dit "bagotage" en français.

See also :
- https://support.strava.com/hc/en-us/community/posts/203365404-Elevation-gain-totally-wrong
- http://www.letsrun.com/forum/flat_read.php?thread=8831465

NB :
- GPS accuracy is +/-15m horizontally, and +/-45m vertically (source : http://xcmag.com/news/gps-versus-barometric-altitude-the-definitive-answer/)
- barometric altitude data may also vary because of meteorological phenomenons : on any given point on Earth, the barometric pressure changes whereas the altitude doesn't.
- combining both GPS + barometric altitudes sounds like a good idea but could actually be worse : inaccuracies may compensate each other (and prove more accurate) or sum up and give wrong data.

In the context of running, the absolute altitude isn't the most important. What matters is the elevation gain / loss, whatever the initial height.

Pourquoi les spaghettis se brisent-ils en trois, quatre ou plus lorsqu’on les plie et jamais en deux ? C’est l’une des questions loufoques que se posait le Prix Nobel de physique (1965) américain Richard Feynman et à laquelle il n’était jamais parvenu à répondre.

En 2005, des scientifiques français, Basile Audoly et Sébastien Neukirch, de l’institut Pierre-et-Marie-Curie avaient finalement réussi à expliquer pourquoi. Pour faire (très) simple : quand on plie un spaghetti, la première cassure provoque une onde qui crée d’autres cassures.

Deux chercheurs américains du MIT viennent, eux, de trouver enfin une parade au problème. Dans un article publié le 9 août par la revue scientifique PNAS, ils expliquent que la solution à ce casse-tête consiste à tordre le spaghetti à 360° avant de le plier légèrement. La torsion dissipe en effet l’énergie de la première cassure, ce qui évite des cassures supplémentaires.

What will happen to Earth, mankind, the universe in the next billions of years ?

A new study from Harvard Business School finds that open plan offices don’t live up to the hype–in fact, the idea that they promote interaction is dead wrong.

“The swimming is the easiest part, something that everyone should be able to do,” he says. “Average athletes are in the water for one and a half hours – that’s a long time if you are not used to it.”

“After that you jump on the bike and cycle for 180 km, including 3000 m elevation gain. If you are not used to cycling uphill it's impossible to do it. Then you are running 25 km on the flat, and the remaining 20 km uphill for 2000 m of ascent. It's brutal.”

(...)

“The biggest problem is people train too much so they get injured,” he says. “Almost everyone overtrains.”