Are you #ULTRAFIT? Show us!

Snap a pic during your #ULTRAFIT workout, post it to Instagram or Twitter, use the hashtag “#ULTRAFITChallenge” and tag us (@muscle_and_fitness and @nutrexresearch). We will check it out and, if you prove to be #ULTRAFIT, you could win an awesome prize pack!

At the end of each phase of the workout, Muscle & Fitness and Nutrex Research will select our top five (5) posts. Winning posts will be featured on and winners will receive a #ULTRAFIT Series Stack from Nutrex Research.

You’ll also be eligible to become our #ULTRAFIT Challenge Champion and win our GRAND PRIZE! The challenger with the most striking transformation will win a feature on, $500 of supplements from Nutrex Research’s new #ULTRAFIT Series, and a VIP trip for two (valued at $3,500) to the 2017 Ultra Music Festival in Miami, Florida!

How to Enter: Post an image on Instagram or Twitter of yourself taking on any phase of the workout and include #ULTRAFITCHALLENGE, @nutrexresearch and @muscle_and_fitness

For complete rules, click HERE.

Entries will be accepted until December 31, 2016.

Congrats to all the #UltraFitChallenge finalists!

Start the workout>>