Capacity of what? And have you got any source on that?
I noticed a dramatic drop in my memory which I attribute to drinking. I stopped two years ago but I’m probably not back to where I would be if I hadn’t been drinking.
There's nothing with carbs, just that you may have been eating too many to begin with. Many many vegetables contain carbs. People shouldn't stop eating carbs, but should reflect on their intake and adjust such that they're not consuming too many, particularly simple carbs as its so easy to do.
And then you eat a hot dog with the bread and feel like it's the bread that makes you feel bad, when it's really both of them together.
It doesn’t take much to go above your RDI. Unfortunately to support a healthy diet you really do need to cook your own food most of the time.
It sends the wrong message that carbs and sugar are bad, then they're not as long as you're not eating multiple chocolate bars.
Nobody is saying to stop eating the dietary fiber subset of carbs.
My frustration is with people and instagrammers who sprout "I quit sugar", "I quit carbs", when they haven't. They've just cut eating too much simple or processed sugars/carbs.
It sends the wrong message.
I find that if I skip those things I can go to bed early enough to get 8 hours and still wake up early enough to get to work first thing in the morning. Your mileage may vary especially if you have kids
Why are so many Americans reliant on melatonin? I don't know anyone who has significant sleeping issues, and no one who takes melatonin. However it comes up quite often in conversations with folks from the US.
Are people there more likely to be stressed because work doesn't let them switch off?
I have yet to hear a clinical neurologist actually recommend melatonin for sleep management. It is highly disruptive and while you may feel you slept well, there will be nagging consequences which result in negative net gain.
Alright this point of yours is not like the others. Using drugs to sleep is always ill advised unless really medically necessary
Stop drinking alcohol, as said elsewhere. It takes about 2-3 weeks of sobriety to regain 80% of the capacity you lost. It's also extremely hard on your emotional regulation, work motivation, patience, and ability to concentrate long after you think you can't feel the effects.
Stop eating carbs, namely because it makes you sleepy and unmotivated. I replaced carbs with tons of fiber and vegetables, like red cabbage, matchstick carrots, and expensive fermented foods. Don't try to imitate your old crappy diet. Stop trying to eat the best meal every night.
Perfect your sleep schedule. I used 10mg EXTENDED RELEASE melatonin about 1 hour before bedtime.
Fight less with your spouse, play boardgames.
Meditate or stare at the wall to learn how to be bored. A lot of "intelligence" is just tolerance for boring/temporarily unrewarding things. Meditation has a lot of benefits as far as clearing out some of the crud.
Exercise, even 5 minutes a day. Anything.
Make sure to work in a variety of settings. If you can take your computer to a park bench and use your phone as a wifi hotspot, great. Being in nature is speculated to improve brain health.