MusclePharm Signs Arnie! After signing Arnold Schwarzenegger to their fast growing ream, MusclePharm have been working along side Arnie to build an exclusive supplement range. The range is based mainly around nutrient support, power, performance, strength and recovery. Try these great products designed by the icon himself that includes a Protein Powder, a Mass Gainer, a Pre-Workout, a Post-Workout, an Amino and a Multivitamin with the promise of more to come later. Enjoy the absolutely fantastic supplements today and they will help you on your fitness journey.