Sourced.
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Muay Thai fighters in the clinch
For grapplers, strikers, and everyone between

You didn't gas out.
You ran out.

That drop late in a hard roll or a fight isn't about heart. It's fuel, and most people train around it instead of fixing it.

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The problem

You run out of ATP before your opponent runs out of ideas.

Every explosive thing you do on the mats or in the ring is paid for by ATP. Your body only stores a few seconds of it. Phosphocreatine tops it back up fast, but only for so long.

Run that system dry and it doesn't matter how hard you trained that week. Your output drops and your reactions slow down, in training just as much as in competition.

8-10s
Is all your stored ATP lasts
3-8kg
Typical cut before weighing in
Grappling training session
Here's where it costs you

Hard training counts for as much as competing does.

The best training in the world still needs fuel behind it.

Cutting weight leaves you low on electrolytes before you've even stepped on the mats. Add a hard session or a real match on top of that and things start to slip. Grip goes, timing goes, decisions get slower.

It's rarely about how hard you trained. It's about what was left when it mattered, whether that's a Tuesday session or competition day.

The fix

Three things, built for the session.

Sourced is built around what fighters and grapplers actually burn through, whether that's a hard training session or a competition. Creatine, electrolytes, and fast carbohydrate, dosed to work fast enough to matter.

01 Creatine

Rebuilds ATP

Helps keep your output up through a hard session, sparring, or a long match.

02 Electrolytes

Keeps you steady

A full spread, not just sodium, helping replace what training and cutting weight take out of you.

03 Fast carbs

Keeps you going

Fast-acting carbohydrate so your energy holds up, whether you're training or competing.

Sponsored athlete
"This is a game changer for fighters. I'm a professional MMA fighter for the PFL, a strong, aggressive fighter representing Scotland, and I don't put anything in my body I haven't tested myself."
Gemma
Professional MMA Fighter, PFL
Built for the session

Creatine Monohydrate + Electrolyte Formulation.

Creatine, full-spectrum electrolytes, and fast-acting carbohydrate, dosed for training and competing, not a supplement shelf. Blood Orange flavour, 30 servings.

Sourced Creatine Monohydrate and Electrolyte Formulation, Blood Orange
Creatine Monohydrate + Electrolyte Formulation
5g creatine, GMO free, natural sweeteners
£29.99 GBP
With subscription
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Third-party tested, Eurofins
Informed Sport option
Made in the UK