| iTread, Set 4, 20 minutes |
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| iTread, Set 5, 20 minutes |
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| iTread, Set 6, 20 minutes |
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| iTread, Set 7, 40 minutes |
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| iTread, Set 9, 60 minutes |
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| Jaime Rodríguez |
YouTube |
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| Jakub Novotný |
YouTube |
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| JB Berns |
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Yes |
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| Jenny Ford |
YouTube |
YesYes |
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| Jenny McClendon Fit Start |
YouTube |
Yes |
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| Jess & Ryan (J&R) |
YouTube |
Yes |
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| Joe Alvarado |
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Yes |
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| Joey Gonzalez |
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| Johnny G Spin and Burn |
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| Johnny G Spin and Sculpt |
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| Jump n Jacked |
YouTube |
Yes |
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| Jump & Stomp |
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| Jump to It |
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| Jumping Singapore |
YouTube |
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| Karen Voight |
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| Kari Anderson |
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| Karly Kent |
YouTube |
Yes |
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| Kat Gates-Buettner |
YouTube |
Yes |
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| Kate Baggio |
YouTube |
Yes |
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| Kathy Smith |
YouTube |
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| Keep on Rebounding |
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| Keiser's Power Pace and Shape |
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| Keiser's Race and Pace |
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| Keith Irace |
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| Kelly Coffey-Meyer |
YouTube |
Yes |
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| Ken Legan |
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| Kristi DeJarld |
YouTube |
Yes |
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| Kristine Jackson |
YouTube |
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| Kung Fu Step Workout |
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| Laura London |
YouTube |
Yes |
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| Lauren Jumps |
YouTube |
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| Leaps and Rebounds |
YouTube |
Yes |
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| LEKFIT |
YouTube |
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| Lindsay Bushman |
YouTube, Amazon Prime Video |
Yes |
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| Linné Linder |
YouTube |
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