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Review on 🌈 JYM Supplement Science Pre Jym Rainbow Sherbet, Black, 20 Servings, PRE Workout - 300mg Caffeine by Amy Kearse

Revainrating 5 out of 5

If you don't know who Jim Stoppani is, I encourage you to find out!

I love all jym products. Long time fan of Jim Stoppani. His products, research and videos are very helpful for both beginners and advanced users. He leaves no room for error in what he does. High quality for what you pay for and has videos on youtube and public forums and provides so much information on supplements, workouts etc. I can't say enough about the doctor but if you don't know him you're missing out, and if you haven't received his product, you're missing out.

Pros
  • Mental concentration. Caffeine and Huperzine A have been suggested to naturally improve mental focus. You'll feel super "in the zone" and ready to finish your workout. Pre JYM isn't loaded with stimulants that make you tremble, make you explode, and make you crash.
Cons
  • Only available in black