We Settled the Zone 2 vs. HIIT Debate in the 1950s

Preview text: We Settled the Zone 2 vs. HIIT Debate in the 1950s There Is No Magic Zone

Monday, Nov 9, 2026 at 6:32 AM EasternKit

Steve MagnessWe Settled the Zone 2 vs. HIIT Debate in the 1950s

Fit to screenFull size

Using this email in an article? Credit: Steve Magness email via They Sent It, with a link to this page. Full-size image

Use this example

Subject: We Settled the Zone 2 vs. HIIT Debate in the 1950s
Preview text: We Settled the Zone 2 vs. HIIT Debate in the 1950s There Is No Magic Zone
From: stevemagness@substack.com
Brand: Steve Magness
ESP: Kit
Sent: Mon Nov 9, 2026, 6:32 AM ET
Size: 123 KB
Images: 18
Links: 33, 9 of them buttons
Subject length: 50 characters

Against Steve Magness's usual

Sent in the 6 AM hour, which holds 10% of its emails; 64% arrive in the 5 AM hour. The subject is 50 characters; its average is 39.

	Nov 9, 2026 6:32 AM	We Settled the Zone 2 vs. HIIT Debate in the 1950s (this email)
	Nov 5, 2026 5:02 AM	Is Being Weird a Performance Enhancer?
	Nov 2, 2026 6:36 AM	There’s More Than One Way to the Top
	Oct 31, 2026 6:09 AM	You Can’t Insure Against Failure
	Oct 29, 2026 3:14 PM	Book Talk \| Live with Malcolm Jenkins and Steve Magness
	Oct 29, 2026 2:01 PM	Live video with Steve Magness and Malcolm Jenkins now: Book Talk \| Live with Malcolm Jenkins and Steve Magness
	Oct 29, 2026 5:01 AM	Mental Toughness