Intra-Workout Fuel
Fast Carbs
Trained By JP TBJP Performance Fuel 1kg - 1kg / Berry Burst
TBJP

TBJP Performance Fuel 1kg

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£29.99
Fast-Carb Intra Fuel Cluster dextrin / fast-acting carbohydrates designed for use during training - steady glucose supply without GI distress.
Endurance Performance Claim Carbohydrate-electrolyte solutions contribute to the maintenance of endurance performance during prolonged endurance exercise.
Stacks With EAAs Pairs cleanly with EAAs and electrolytes in your intra-workout shaker. Light texture, no clouding, no grit.
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Berry Burst
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Orange & Mango
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Next day (£5.99)
17,600+ Reviews
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Est. 2005
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Food supplements should not be used as a substitute for a varied and balanced diet and healthy lifestyle. If you are pregnant, breastfeeding, taking medication, or under medical supervision, consult your doctor before use. Do not exceed the recommended daily intake. Store out of reach of children.

Berry Burst
Orange & Mango

TBJP Performance Fuel 1kg, Fast-Carb Intra-Workout Fuel

Trained By JP Performance Fuel 1kg is a sustained-energy intra-training carbohydrate powder built for endurance and high-volume strength athletes who want sustained-release fuel during long sessions without the gut-friction issues maltodextrin can cause. The 1kg tub provides multiple weeks of daily training-session use, with a clean carbohydrate base designed for slower, steadier glucose delivery than fast-absorbing sugars.

The carbohydrate base targets sustained energy delivery across 60-120 minute training sessions. Slower-release carbohydrates avoid the peak-and-crash blood sugar curve that pure glucose or sucrose-based intra-training drinks can produce, supporting more consistent training output across the full session. The unflavoured or lightly-flavoured format mixes cleanly into water for sipping through training rather than gulping as a single shake.

What separates Performance Fuel from maltodextrin is the release profile and the digestive tolerance. Maltodextrin spikes blood glucose quickly - useful for last-rep glucose support but harder on the gut at sustained sipping volumes. The sustained-release carbohydrate base in Performance Fuel suits trainees who sip through 60+ minute sessions and want fuel without the gastric distress fast carbs sometimes cause at high session volumes.

Performance Fuel suits endurance athletes (cyclists, runners, triathletes) running long training sessions, bodybuilders in high-volume hypertrophy blocks where session length exceeds 75 minutes, and trainees who experience gut discomfort with maltodextrin-based intra-training drinks. Not the right pick for short high-intensity sessions where fast-absorbing carbs are the better fit.

Key Benefits

Fast-Carb Intra Fuel

Cluster dextrin / fast-acting carbohydrates designed for use during training - steady glucose supply without GI distress.

Endurance Performance Claim

Carbohydrate-electrolyte solutions contribute to the maintenance of endurance performance during prolonged endurance exercise.

Stacks With EAAs

Pairs cleanly with EAAs and electrolytes in your intra-workout shaker. Light texture, no clouding, no grit.

Intra-Workout Fuel

Fast Carbs Authorised TBJP stockist. Free UK delivery over £40.

Frequently Asked Questions

When should I sip intra-workout carbs?

Mix one 50g serving of TBJP intra-workout fuel with 500–750ml of cold water and sip steadily through training. Particularly useful for sessions running over 60 minutes - high-volume lifting, conditioning blocks, endurance work. Carbohydrate-electrolyte solutions contribute to the maintenance of endurance performance during prolonged endurance exercise.

How does cluster dextrin compare to maltodextrin?

Cluster dextrin (highly branched cyclic dextrin) is a fast-absorbing carbohydrate with a smoother gut profile than older fast carbs like maltodextrin. That makes it well-suited to intra-workout sipping over long sessions. TBJP intra-workout fuels are built around cluster dextrin for that reason.

Can I mix intra-workout carbs with EAAs?

Yes - TBJP intra-workout carbs stack cleanly with EAAs in the same shaker. Mix one carb serving with one EAA serving in 500–750ml cold water and sip through training. The combination suits long, hard sessions where both fuel and amino acid coverage are useful.