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"Jeffing" is new form of interval training

Name: "Jeffing" is new form of interval training
Uploaded: 2026-04-15T12:52:00-0400
Duration: 1 min 38 s
Description: Despite the quirky name, "Jeffing" is a fast-growing exercise encouraging people to get moving. Gwen Baumgardner reports.

Despite the quirky name, "Jeffing" is a fast-growing exercise encouraging people to get moving. Gwen Baumgardner reports.