Energy chews give you another way to fuel when drinks and gels start to feel like too much. They're easy to pocket, easy to dose, and a welcome change of texture when you've been sucking down the same sweet gel for three hours straight.

But not every chew is built for the same job, and the "best" one is entirely a question of what you're optimising for. A short, hard, hour-long effort asks for something different than a six-hour day in the heat. If you're heading into hot conditions, going long, or you're someone who finishes sessions with salt crusting on your kit, the thing that matters most isn't simply how much carbohydrate you're carrying. It's whether your fuel carries electrolytes too.

That's the category we're focused on here: the best energy chew for hot, long, high-sweat efforts — and it's the job STYRKR CEL50 is built to do.

What this category actually demands

Before naming a winner, it's worth being clear about what a chew needs to do well in heat and over distance. Three things matter most:

  1. It has to carry sodium, not just carbohydrates. Over a long, hot effort you lose meaningful amounts of salt in sweat. Fuel that ignores that leaves half the job undone.

  2. It has to be easy on the gut, hour after hour. The longer you go, the more your digestion is the limiting factor. The carbohydrate has to be absorbed efficiently, not left sitting in your stomach.

  3. It has to be easy to eat and dose when you're tired, hot and working hard, in small increments, not all-or-nothing servings.

Hold those three criteria in mind, because they're the lens for everything below.

The problem with most chews

Here's the catch with the chew market: the vast majority of chews are carbs-only.

That's perfectly fine if all you need is fuel. But the moment it gets hot, or your session stretches past a couple of hours, carbohydrate alone leaves a gap — because you're not just burning energy, you're losing electrolytes.

Sweat sodium losses vary enormously between athletes. Sweat rates commonly sit anywhere from roughly half a litre to two litres an hour, and the sodium concentration of that sweat ranges widely from person to person — light sweaters lose relatively little, while "salty sweaters" can lose well over a gram of sodium per litre. Over a long, hot day, that adds up fast. Drop your sodium too far and you don't just feel flat: performance suffers, cramping risk climbs, and in extreme cases it becomes a genuine health issue.

A carb-only chew does nothing about any of that. So you end up carrying salt tablets as well, remembering to take them on some separate schedule, and juggling two products when you'd rather be thinking about one. For hot and long efforts, the best chew isn't the one with the most carbohydrate — it's the one that fuels and salts you in the same mouthful.

Why CEL50 wins this category

CEL50 builds the electrolytes in. 50g of carbohydrate and 267mg of sodium in every packet — so you're topping up fuel and salt together, continuously, as you go, rather than in occasional separate hits.

And this isn't sodium bolted on as a marketing tick-box. The carbohydrate and the salt genuinely work together at the gut wall.

The science: a sodium-glucose pump

Glucose doesn't drift across your intestinal wall on its own. It's carried by a specific transporter protein called SGLT1 — and the way SGLT1 works is that it moves sodium and glucose at the same time, together, in a fixed partnership. It is, quite literally, a sodium-glucose co-transporter. No sodium, no transport.

This is the exact mechanism behind oral rehydration therapy — the glucose-and-salt solution used worldwide to treat dehydration, and one of the most important medical interventions of the last century. Pair glucose with sodium and you absorb both faster than you would either alone, and you pull water in along with them.

For an athlete, that means CEL50's sodium is doing two jobs at once:

  • Replacing the salt you're sweating out, and

  • Driving glucose across your gut and into your bloodstream more effectively.

Fuel and electrolyte, engineered to move as a team — which is precisely what you want when the temperature climbs and your sweat rate goes with it.

Putting the 267mg in context

267mg of sodium per packet is a substantial, useful dose for a chew — but the honest, practical advice is to match your fuelling to your own sweat losses. A sweat test will tell you roughly how much sodium you lose per hour, and from there you can work out whether CEL50's sodium covers you on its own or whether, on the very hottest days or for the saltiest sweaters, you'll want an additional electrolyte top-up. The point isn't that CEL50 is a blanket solution for every sweat rate on earth — it's that, unlike a carbs-only chew, it's carrying its weight on the electrolyte side instead of leaving it entirely to you.

The carbohydrate side: dense, fast, clean

At 50g of carbohydrate per packet, CEL50 is carbohydrate-dense for the format. That matters more than it sounds: the more fuel you get per packet, the fewer wrappers you're opening and the fewer times you have to break rhythm to fuel. On a long day, "fewer things to do" is a real advantage.

CEL50 is glucose-based, which makes it fast, clean energy. Glucose is the body's default fuel currency — quick to absorb (via that SGLT1 pathway), quick to oxidise, no complicated digestion required. For steadier efforts and the earlier hours of a long session, that's exactly what you want.

Being straight about the glucose ceiling

There's one honest limit worth understanding, because it shapes how you should use CEL50.

Any single carbohydrate source has a ceiling on how fast your body can absorb it. For glucose, that ceiling sits at around 60g per hour. Push past it and the SGLT1 transporters saturate — they're already working flat out — and the excess carbohydrate simply can't get across the gut wall fast enough. It sits in your intestine instead, drawing in water, and that's where the bloating, sloshing and GI distress that endurance athletes dread comes from.

So on its own, CEL50 is an excellent tool up to around that 60g/hr mark — which comfortably covers a huge range of real-world endurance fuelling, especially at the steadier intensities where you're out there for hours.

Going higher: CEL50 as a stackable base

If you're chasing the very highest fuelling rates — the 90g/hr and beyond that long, hard racing increasingly calls for — you need a second carbohydrate that uses a different doorway into the body.

That's where fructose comes in. Fructose is absorbed by a separate transporter, GLUT5, completely independent of the glucose pathway. Run both at once and your total carbohydrate absorption climbs well past the single-source ceiling, toward 90g/hr and higher, because you're no longer bottlenecked on one transporter.

CEL50 is designed to be the glucose half of that equation — in a chewable, electrolyte-carrying, pocket-friendly format. Here's how that looks in practice:

  • Steady or lower-intensity hours: CEL50 on its own handles your fuel and salt, no fuss.

  • When you need to go higher: stack CEL50 with a glucose-and-fructose STYRKR gel or drink mix. The fructose pathway stacks on top of the glucose you're already taking, and you build your way toward 90g/hr+ — dialled to the session, the conditions, and what your gut can handle that day.

That's the real role of CEL50 in a serious fuelling plan: not a do-everything product, but the reliable, salt-carrying foundation you build the rest of your strategy on.

Dosing: five blocks, your call

CEL50 splits into five 10g blocks, and that's a deliberate, useful design choice.

Fuelling little and often is far easier on your gut than big, occasional hits — a steady drip of carbohydrate keeps your absorption machinery working at a comfortable, sustainable rate rather than overwhelming it in spikes. Five separate 10g blocks let you do exactly that: take a block when you need a top-up rather than committing to a whole serving at once. You stay in control of the timing, and you can fine-tune your intake to how you're feeling.

There's a sensory benefit too. Anyone who's gone long knows flavour fatigue — that point where your body starts actively rejecting yet another sweet gel, and you under-fuel right when it matters most. Having a different texture to rotate through is one of the simplest, most underrated ways to keep your total carbohydrate intake up across a long day. A chew breaks the monotony of gel after gel.

How to use CEL50, session by session

  • Long, hot training rides and runs: CEL50 as your primary fuel — it covers carbohydrate and sodium together, so you're not also rationing salt tabs. Take a 10g block every 10–15 minutes to keep a steady drip going.

  • Marathons and half-distance efforts in the heat: lean on the built-in sodium; match your block frequency to your target carbohydrate rate, and add a fructose source if you're aiming above ~60g/hr.

  • Ultra-distance and all-day adventures: ideal territory — the dosing flexibility and the salt make it easy to fuel steadily over many hours, and the chewable texture is a relief when you're tired of liquids and gels.

  • High-rate race fuelling (90g/hr+): use CEL50 as your glucose-and-electrolyte base and stack a glucose-fructose gel or mix on top to push the rate up without overloading a single pathway.