Who started “Scientific 7-Minute Workout”?

Gretchen Reynolds, on Press, May 9, 2013. It reached 7 platforms in 10.5 years.

LineageContestedKey steps, 12 of 18. Lines follow time and platform
Gretchen ReynoldsFirst postGood Morning AmericaTVtiltOpen webPlatform jumpBacklashPeakPlatform jumpOwner responsePressPlatform jumpAfterlifePlatform jumpPatient zero