How does your brain actually get its energy?

Preview text: The 2026 answer isn't what most people assume

Mara LabsSaturday, Jul 18, 2026 at 4:00 PM EasternKlaviyo
Mara LabsHow does your brain actually get its energy?
Subject
How does your brain actually get its energy?
Preview text
The 2026 answer isn't what most people assume
From
info@mara-labs.com
Sent
Sat Jul 18, 2026, 4:00 PM ET
Sent to
mara-labs.com
Size
55 KB
Images
6
Links
13, 4 of them buttons
Subject length
44 characters

Against Mara Labs's usual

Sent in the 4 PM hour, which holds 10% of its emails; 17% arrive in the 9 AM hour. The subject is 44 characters; its average is 37.

Email headers

What the brand's servers put on this email. Our receiving servers, the address we subscribed with and unsubscribe links are left out.

From
David @ Mara Labs <[email protected]>
Subject
How does your brain actually get its energy?
Date
Sat, 18 Jul 2026 20:00:31 +0000
Message-ID domain
klaviyomail.com
Return-Path domain
k3.send.mara-labs.com
DKIM signature
d=shared.klaviyomail.com s=def1; d=send.mara-labs.com s=mtd1
List-Unsubscribe
Present, one-click

Servers it passed through, newest first

  1. from kl-203-28-2.kmta.shared.klaviyomail.com [170.203.28.2] by our receiving server with ESMTPS
  2. from (unnamed) by kmta-mta-blue-….servers.clovesoftware.com with SMTP

Other sending headers (names only): X-Mailer-Info-Extra2, X-Mailer-Info, X-Mailer-Info-Extra, X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse

Report this email

Sent just before and after

Jul 23, 2026 6:59 PMAbout your kitchen sponge…
Jul 21, 2026 9:52 PMDiscover the real reason it’s so hard to beat food cravings…
Jul 19, 2026 7:57 PMSunday Recap
Jul 18, 2026 4:00 PMHow does your brain actually get its energy? (this email)
Jul 17, 2026 2:00 PM60-Second Science: The "master switch" inside every one of your cells
Jul 14, 2026 5:15 PMThe safe secret to a good night’s sleep
Jul 12, 2026 1:01 PMSunday Recap

More from Mara Labs

All Mara Labs emails

Get the Black Friday insights

We're collecting every Black Friday email from more than 50,000 brands as it lands. Get what we find: who starts first, the biggest discounts, and the subject lines that stand out.

Free. You'll get a confirmation email first, and you can unsubscribe anytime.