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✦ New Frontier Of Your Mind ✦
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Learn now, sweat later.
A Dutch team taught 72 people the same 90 pairs of picture and place, across about 40 minutes.
One group rode a bike straight after. Another waited four hours… and the last group skipped it.
Two days on, they sat the test…
Only one group had held onto more.
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// Quick Check
First reaction?
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// MuscleMemo
Working muscle talks to the brain in chemicals. One of them is irisin, cut loose from a protein called FNDC5.
Levels run low in the hippocampus and spinal fluid of people with Alzheimer’s.
Block it in mice and their memory for new objects falls away.
With it blocked, swimming did much less for them. Raise it again and memory came back in the models.
Mice and human tissue, then, rather than a trial in people.
↗ Source: Lourenco, Nature Medicine, 2019
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Back to the bikes at the Donders Institute.
Each rider went 35 minutes, in bursts reaching up to 80% of maximum heart rate.
Same bike, same effort, same test. Only the clock changed.
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// The Facts
| 72 |
people, split across three groups. |
| 4 |
hours after learning, the gap that paid. |
| 48 |
hours later, when they sat the memory test. |
Riding straight after learning did no better than skipping the ride. Scans caught sharper hippocampal patterns in the delayed group during correct recall. Why four hours is an open question, and the team points at dopamine and noradrenaline.
↗ Source: van Dongen, Current Biology, 2016
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The timing beat the workout.
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Most study advice comes from an app, not a lab.
I spend more than $20,000 a year on private research… the sort hedge funds pay for. Walled off from the public.
Then I read the paper behind the claim.
My Spanish deck runs at eight, and the hill ride lands near noon. The words stick better on those days, and that is one man’s report.
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// The Fix
Learn, wait, then move
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// The Steps
The Four Hour Gap
A clock and a bike are the entire kit.
| 01 |
Learn the thing in one sitting, early in the day. |
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Set an alarm for four hours out. |
| 03 |
Ride 35 minutes when it goes off, in hard bursts. |
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Aim for breathless, not chatty, on the hard parts. |
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Check what stuck two days later, not two hours. |
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// Quick Wins
The trial used a bike. A hill or a stair climb should fit, but neither was tested.
Gentle pottering is not the dose. These riders worked near 80% of their maximum.
One session proves little. Judge the habit across a month of learning.
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// Your Pick
When does your hard effort land?
Pick one and hit send.
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Stay primal,
Dex
Primal Code
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