Yes, a healthy person without heartburn or other reflux symptoms can sometimes lie down after eating: a horizontal position does not "stop digestion" and is not considered dangerous in itself.
There's no proven universal water requirement for every hour of flight for a healthy adult. On a plane, it's smarter to maintain your normal hydration regimen, drinking small amounts as you feel thirsty, and not trying to deliberately "flood" your body with several liters of water.
Before a long flight, it's best to eat a moderate amount of familiar, regular food that typically doesn't leave you feeling heavy, heartburn, noticeable bloating, or nauseated. There's no such thing as a special "airplane diet."
If the goal is to determine your normal resting blood pressure, measuring it immediately after drinking coffee is not recommended. The American Heart Association recommends avoiding caffeinated beverages for at least 30 minutes before taking a standard measurement.
The best way to support your brain as you age isn't through one "magic" habit, but through a combination of several: regular exercise, controlling blood pressure, sugar, and cholesterol, quitting smoking, eating a healthy diet, preserving your hearing, and being socially and intellectually active.
To accurately measure blood pressure at home, it is best to use an automatic blood pressure monitor with an upper arm cuff, tested according to a recognized accuracy protocol.
For systematic home monitoring, it's best to measure blood pressure twice a day: morning and evening, at roughly the same time and under the same conditions. The morning series is typically performed after waking up and using the toilet, but before breakfast and before taking blood pressure medications.
After social media, long text can actually be more difficult to process: your attention quickly wanders, you feel the urge to scroll the page, check your phone, or move on to something new, and you have to reread several paragraphs.
Constant smartphone use can make attention more fragmented: a person is more likely to interrupt their current activity, switch between tasks, and become accustomed to responding to new cues—messages, updates, notifications, and the urge to check their phone themselves.
