01
Shake the tub
Give the sealed tub a good shake before opening and shake it periodically so the formula stays evenly mixed.
Welcome to the RZN community
Fuel Your RZN.
Thank you for supporting RZN Nutrition and becoming part of what I’m building. This page has everything you need to get started, share your experience, and stay connected.
Start Here ↓Your first workout
Get the most from CORE⁵
A few quick tips can help you find the serving, flavor strength, and routine that work best for you.
02
Start where you’re comfortable
New to pre-workout or sensitive to caffeine? Begin with half a scoop and assess how you feel before increasing.
03
Adjust the water
Use less water for a stronger flavor or add more water for a lighter, smoother drink.
04
Make it part of the routine
Mix CORE⁵ before training and follow the serving directions printed on your product label.
Keep One.
Give One.
Give One.
Two samples included
Help us spread the word
Keep one sample pack for your next workout and share the other with a friend, training partner, or someone who deserves a better pre-workout.
Stay connected
What comes next?
Your feedback, recommendations, and continued support help RZN grow one order at a time.
After you try it
Leave an honest review
After you’ve had a few workouts with CORE⁵, let us know what you thought. Honest feedback helps RZN improve and helps other customers make a confident decision.
Review CORE⁵Spread the word
Send CORE⁵ to a friend
Know someone looking for pre-workout, creatine, and electrolytes in one scoop? Send them CORE⁵.
Share With a FriendReady for more?
Reorder CORE⁵
Restock your next 30 workouts or choose Subscribe and Save so you don’t have to think about running out.
Shop CORE⁵A note from the founder
Thank you for being part of this.
Every order matters to me. I built CORE⁵ because I believed pre-workout could be simpler, cleaner, and still effective. Your support is helping turn that idea into something real.
Andrew
Founder, RZN Nutrition
Founder, RZN Nutrition
