WATCH: NFL Draft prospect Louis Nix is on a highly controlled diet

For projected first-round draft pick Louis Nix, preparing for the scouting combine meant a pretty strict diet and training program.

That diet included the usual suspects -- lots of colorful veggies and such -- but judging by the video above, it also consisted of shot-glass sized supplements tailored to the nutritional needs of Nix and his fellow trainees.

And while the physical training was expectedly tough, the recovery appeared to be brutal in its own way... particularly the cold tub.

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