Uploaded February 2014 | Updated September 2026, 2 weeks ago

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Comedian Mark Malkoff teams with personal trainer Robert Brace in an attempt to get ripped on a vegan diet in 28 days. Will Mark pull it off!? Watch and find out.

Directed & Edited by Justin Moriarty

For info on Mark's diet and workout: the28daychallenge.com/vegan