Quotes of the Day

Compared to reading a printed book, reading on an iPad suppressed melatonin release by over 50 percent at night. Indeed, iPad reading delayed the rise of melatonin by up to three hours, relative to the natural rise in these same individuals when reading a printed book. When reading on the iPad, their melatonin peak, and thus instruction to sleep, did not occur until the early-morning hours, rather than before midnight. Unsurprisingly, individuals took longer to fall asleep after iPad reading relative to print-copy reading. [2017] - Matthew Walker

The vertical horizontal filter (VHF) indicator measures the strength of a market's trend by comparing the difference between the highest and lowest values during a given period (P) to the cumulative day-to-day change. A higher value indicates a stronger trend, and a lower value indicates a weaker trend. The indicator does not measure directions, but simply the strength of the trend, in whichever direction it is moving.  [2009] - James DiGeorgia

As one grows older, the pool of eligible and available men and women becomes smaller. The decision to marry is often influenced by the fear of being single and alone and the need to form a secure attachment. A person may feel pressure to marry and may settle for someone who might be a marital risk. Some people at this stage may marry realizing there is a tradeoff and enter into their marriage aware of and prepared for some of the conflicts and pitfalls ahead. [2011] - Isabelle Fox

Aim for a diet that is close to 100% plant- and fish-based, limiting fish consumption to two or three portions a week and avoiding fish with high mercury content (tuna, swordfish, mackerel, halibut). If you are past age 65 and start to lose muscle mass, strength, and weight, introduce more fish into the diet, along with other animal-based foods commonly consumed by populations with record longevity, like eggs and certain cheeses (preferably feta or pecorino) and yogurt made from goat’s milk, all of which are commonly consumed in high-longevity areas. [2018] - Valter Longo

One small but revealing study found that subjects on an alternate-day fasting (ADF) diet did lose weight-but they also lost more lean mass (i.e. muscle) than subjects who simply ate 25% fewer calories every day. This study was limited because of its small size and short duration, but it suggests that fasting might cause some people, especially lean people, to lose too much muscle. On top of this, the ADF group had much lower activity levels during the study, which suggests that they were not feeling very good on the days they were not eating. [2023] - Peter Attia