What Your Wearable Is Actually Measuring

Preview text: Heart rate variability, the small differences in timing between one heartbeat and the…

Wednesday, Sep 16, 2026 at 3:02 PM EasternKlaviyo

Recovery for AthletesWhat Your Wearable Is Actually Measuring

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Subject: What Your Wearable Is Actually Measuring
Preview text: Heart rate variability, the small differences in timing between one heartbeat and the…
From: sales@recoveryforathletes.com
Brand: Recovery for Athletes
ESP: Klaviyo
Sent: Wed Sep 16, 2026, 3:02 PM ET
Size: 100 KB
Images: 19
Links: 23, 3 of them buttons
Subject length: 40 characters

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Sent in the 3 PM hour, which holds 13% of its emails; 15% arrive in the 2 PM hour. The subject is 40 characters, the same as its average.

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