Sports candy during exercise: what works and what is just candy
TL;DR — Sports candy is simply candy that athletes take with them because it is light, cheap, and sweet. It provides carbs, but primarily glucose, without the 2:1 glucose/fructose ratio your gut needs to process more than 60g per hour. For sessions under an hour or during a casual ride, that doesn't matter. Beyond 90 minutes at pace, it does. My advice: sports drink as a base, 1 to 2 fruit performance bars per hour as a solid component, and candy only as an emergency solution.
There is no such category as "sports candy." Yet, athletes reach for it in droves. Haribo, wine gums, cola bottles, licorice. I understand why: it's light, cheap, and available at every gas station counter. The question I answer in this blog is simple: does it work, or is it just candy in athletic clothing? For those who want the basics first, read my complete guide to energy bars for cycling.
What is sports candy and why do athletes carry it?
Sports candy is a collective term for regular candy used as fuel during physical exertion. It was never designed for that purpose. It is used because it provides rapidly absorbable sugar and fits easily into a back pocket.
The logic is partially sound. During intense exercise, you primarily burn carbs. Your internal sugar reserve—the glycogen in your muscles and liver—is depleted within 60 to 90 minutes at pace. Refueling, therefore, is functional. The question isn't whether you need carbs; the question is in what form your gut lets them through the fastest.
The fact that pros are filmed with Haribo in their back pockets makes for a compelling image. What they consume in addition to that bag—in terms of sports drinks and measured nutrition—is not shown. That is the part that does the real work.
What does candy actually do during a ride or run?
Regular candy consists largely of glucose syrup and sucrose (table sugar). Sucrose breaks down in your gut into glucose and fructose, one-to-one. Combined with the glucose syrup, you end up with a mix that leans heavily toward glucose. That is the problem.
Your gut has two separate transport channels for sugar: one for glucose, one for fructose. The glucose channel is saturated at about 60g per hour. Anything you eat above that amount is not absorbed. It remains in your gut and causes a heavy feeling, gas, and stomach issues. Cyclists and runners who use candy as their primary fuel recognize this: they keep eating but still hit a wall.
A 2:1 glucose/fructose ratio utilizes both channels simultaneously. Jeukendrup and Moseley demonstrated in 2010 that a 2:1 mix leaves the stomach faster and reaches the blood more quickly than glucose alone. King and colleagues found in 2019 that 90g per hour in a 2:1 ratio provided the best time-trial performance over three hours of cycling. Consuming more didn't help. That is the limit that candy cannot reach, because candy does not control that ratio.
Furthermore, candy has no dosing. A bag of cola bottles contains no portion-per-exertion-moment. You eat too much or too little, without a reference point. A 25g fruit performance bar provides 20g of carbs, every single time. That makes dosing repeatable. You can read more about that difference in fruit performance bar versus Haribo: not all sugar is created equal.
When does candy actually work?
I'll be honest. Candy works in four situations.
- Short exercise under 60 minutes. Your reserves aren't empty yet. Extra carbs are barely needed. Candy does little harm and little good.
- Low intensity. On a recovery ride or a walk, you burn few carbs. Any source of sugar will do.
- Emergency scenario. Out of food, gas station in sight, Haribo on the counter. Sugar is better than nothing in that moment.
- Mental stimulation. A familiar taste or texture can make the perceived exertion feel lighter. Real, but indirect.
Outside of those four scenarios, candy consistently performs worse than nutrition built for use during exercise. Not because of marketing, but because of how your gut works.
What makes a fruit performance bar different from sports candy?
A fruit performance bar is not candy, not a gel, and not a supermarket bar. It is one thing: carbs during exercise, in a form your gut processes optimally. The base is fruit pulp, making up about half of the bar. To that, I add glucose and fructose to reach a 2:1 ratio and 80g of carbs per 100g. No colorings, no synthetic flavors, no gelatin. Vegan and gluten-free.
| Feature | Regular candy (Haribo etc.) | Fruit performance bar |
|---|---|---|
| Glucose/fructose ratio | Uncontrolled, mostly glucose | 2:1 |
| Carbs per 100g | 70 to 80g, variable | 80g |
| Portion per intake | No standard | 25g = 20g carbs |
| Fruit | Flavoring | Approx. 50% fruit pulp |
| Artificials | Coloring, flavoring, gelatin | 0% |
| Vegan and gluten-free | Usually not | Yes |
| Designed for exertion | No | Yes |
Soft and chewable, not a brick. That’s no minor detail. After two hours at pace, you don't want to struggle with a dry bar. You can read why more and more riders are ditching gels in why cyclists are swapping gels for a clean-label fruit performance bar.
How do you dose carbs while cycling or running?
The guideline is consistent: for sessions over an hour, aim for 60 to 90g of carbs per hour. At the lower limit, a single glucose source suffices. At the upper limit, at race pace or during long endurance events, you need the 2:1 ratio to keep your stomach settled.
This is how I structure an hour:
- Sports drink as a base. 500 to 800ml per hour with 6 to 8% carbs provides 30 to 60g.
- 1 to 2 fruit performance bars per hour. Each 25g bar provides 20g of carbs. Solid, chewable, measured.
- Optionally 1 gel in the finale. Only at high intensity, when speed is essential. When to choose what is explained in energy bar versus energy gel: when to use what.
This way, you reach 60 to 90g per hour without weighing and without guessing how many cola bottles are enough. Candy has no dosage instructions. A fruit performance bar does, because the product is built for that purpose.
Buyer's guide: when do you choose what?
This isn't a black-and-white story. It's a performance trade-off.
- Endurance training longer than 90 minutes at pace: 2:1 fuel. Candy cannot keep up with the absorption needs at high volumes.
- Competition: every gram counts. Measured fuel without artificials that irritate your stomach.
- Recreational ride under 60 minutes: candy does no harm. It also doesn't do what you think it does.
- Vegan or gluten-free: most candy is disqualified due to gelatin or cross-contamination. A fruit performance bar is both.
- Budget is the priority: candy is cheaper per gram of sugar. Stomach issues have a price, too. You pay that price during the ride.
Energy candies for cycling exist because athletes want something that is light, fast, and easy. That is exactly why I built the fruit performance bar. The same benefits, built on physiology instead of the candy factory. For the bigger picture, read what energy source I bring on a long bike ride.
Clean fuel is not a compromise
One principle: nothing in the bar that doesn't belong there. No artificials, no synthetic colorings, no gelatin. Fruit × effect. The ingredients are the function.
Clean doesn't mean soft or tame here. It means functional without noise. No ingredients that irritate your gut. No sugars in a ratio that caps your absorption. No random portions that make dosing impossible.
No gel. No brick. No candy. Fuel during exercise. Fuel your flight.
Scientific foundation
A 2:1 glucose/fructose mix leaves the stomach faster and delivers fluid and carbs to the blood more rapidly than glucose alone (Jeukendrup & Moseley, 2010). Trained cyclists rode a time trial of approximately one hour 8% faster on 2:1 than on glucose alone (Currell & Jeukendrup, 2008). Over three hours of cycling, 90g per hour in a 2:1 ratio provided the best performance; a higher dose provided no additional benefit (King et al., 2019). Regular candy does not control this ratio and is therefore stuck at the absorption limit of glucose alone, approximately 60g per hour.
Sources
- Currell K, Jeukendrup AE. Superior endurance performance with ingestion of multiple transportable carbohydrates. Medicine & Science in Sports & Exercise, 2008. doi:10.1249/mss.0b013e31815adf19
- Jeukendrup AE, Moseley L. Multiple transportable carbohydrates enhance gastric emptying and fluid delivery. Scandinavian Journal of Medicine & Science in Sports, 2010. doi:10.1111/j.1600-0838.2008.00862.x
- King AJ et al. Liver and muscle glycogen oxidation and performance with dose variation of glucose-fructose ingestion during prolonged (3 h) exercise. European Journal of Applied Physiology, 2019. doi:10.1007/s00421-019-04106-9
Frequently Asked Questions
What is sports candy?
Sports candy is regular candy that athletes use during exercise as a quick source of sugar: Haribo, gummy bears, wine gums, cola bottles, licorice. It is not designed for sport. It provides carbs, but without a controlled glucose/fructose ratio and without a fixed portion.
Does Haribo work during cycling?
Under an hour or at low intensity: yes, any source of sugar suffices then. Beyond 90 minutes at pace, you will hit a wall. Haribo consists primarily of glucose, and your gut absorbs a maximum of approximately 60g per hour of that. The rest remains behind and causes stomach issues.
Why do professional cyclists eat Haribo?
Because it is light, sweet, and easy, and because it provides a mental boost. What is not shown on camera is the sports drink and measured nutrition that form the basis. Haribo is the supplement, not the fuel.
How many carbs do I need per hour during endurance exercise?
For sessions over an hour, aim for 60 to 90g per hour. You only reach the upper limit of 90g with a 2:1 glucose/fructose ratio because you are then using two transport channels in your gut simultaneously. With glucose alone, you cap out around 60g.
What does 2:1 glucose/fructose mean?
Two parts glucose to one part fructose. Your gut has separate channels for both sugars. By combining them, you absorb more carbs per hour and the mix leaves your stomach faster. This is supported by studies on trained cyclists.
When should I choose a fruit performance bar instead of energy candies?
As soon as you ride or run for longer than ninety minutes, move above moderate intensity, or want to avoid stomach issues. A 25g fruit performance bar provides 20g of carbs in a 2:1 ratio, with approx. 50% fruit pulp, without artificials, vegan and gluten-free. Combine with sports drink: 1 to 2 bars per hour.
Is a fruit performance bar also candy?
No. It is fuel during exercise. The difference lies in the 2:1 ratio, the fixed 25g portion, the fruit pulp base, and the absence of colorings, flavorings, and gelatin.
