What a difference 39 days makes when it comes to exercising and eating right! Cole DeBoer has been working on the 75 Hard Challenge since mid-June, and already the results have beyond paid off. On July 23, the Teen Mom 2 star proudly showed off how far he’s come with a then and now, side by side Instagram shirtless photo post of his body at the start of the challenge, and how it now looks 39 days in.