Substrate Fuel — intra-workout dual-source carbohydrate and electrolyte pouch

Fuel — Intra-Workout Carbs + Electrolytes

$39.99
Sale price  $39.99 Regular price 
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Substrate Fuel — intra-workout dual-source carbohydrate and electrolyte pouch

Fuel — Intra-Workout Carbs + Electrolytes

$39.99
Sale price  $39.99 Regular price 

Carbs where you burn them. Fast, dual-source carbohydrate fuel for anything over an hour — go long without bonking. Just carbs and sodium. No BCAA filler, no junk.

What's inside

  • Dual-source carbohydrate (glucose:fructose 2:1) — ~40 g/serving. Two transportable carbs use two absorption pathways, pushing carb oxidation past the ~60 g/hr ceiling of single-source fuels — up to 90 g/hr for a trained gut.
  • Sodium — ~400 mg/serving. Replaces what you sweat out on long, hard efforts.

Why dual-source carbs

Your gut can only absorb so much glucose per hour. Adding fructose opens a second transporter — so you can take on more carbohydrate, oxidize more of it, and hold your pace deeper into long sessions. Scale it: 30 g/hr for tempo work, up to 90 g/hr for racing and multi-hour days.

What's NOT in it

No BCAAs (low-value filler most "fuels" waste space on). No sugar bombs, no dyes. Just the fuel your working muscles actually use.

Who it's for

Long runs, rides, swims, HYROX, races — any session over 60–75 minutes or any glycogen-depleting interval block. The hybrid athlete's during-workout fuel.

How to use

Mix with water and sip 30–90 g of carbohydrate per hour during your session, to tolerance. Start lower and train your gut up over time.

These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.

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