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01:03 — Peterson has worked with the Kardashians.
01:50 — Gunnar Peterson says the Kardashian is an 'animal' in the gym, and also works out with the whole Kardashian family! ET gets the secrets!
00:41 — Gunnar Peterson and Latreal Mitchell open up about how Khloe Kardashian motivates participants and is transparent about her weight loss journey on the (more…)