Pre-workouts are everywhere.
Colorful powders, promises of instant energy, maximum focus… But in reality, is this really what your body needs?
As a nutritionist, I often see people looking for a “boost” when the solution is much simpler.
In short
- Your training energy comes primarily from carbohydrates, not stimulants.
- Most pre-workouts mainly contain caffeine, sweeteners, and ingredients that are often underdosed.
- Caffeine is the ingredient with the best-proven immediate effect: it improves alertness and reduces the perception of effort.
- Feeling stimulated is not the same as having energy.
- A snack containing carbohydrates (and a coffee if you tolerate it) is an effective natural pre-workout.
Your energy starts with your food
Before even talking about supplements, you need to understand one essential thing: during intense exercise, your body primarily runs on carbohydrates.
They are what:
- fuel your muscles;
- support your effort;
- provide your energy.
Without carbohydrates, your body compensates… and you feel it quickly: fatigue, reduced performance.
Pre-workout: what these products really contain
Most commercial pre-workouts have a similar structure.
Combined stimulants
Caffeine, guarana, green tea extract… multiple sources of caffeine to amplify the energizing effect. Be careful: the total dose may exceed 300 mg per serving.
A sweet taste… without energy
Sweeteners replace sugar. So: no carbohydrates, no energy!
An impressive list of ingredients
Creatine, BCAAs, beta-alanine, vitamins… often underdosed and therefore providing little tangible effect. Creatine, for example, is effective, but it works when taken at 3 to 5 g every day for several weeks, not as a pre-workout “boost.”
The ingredient with the best-proven immediate effect: CAFFEINE
It can:
- improve alertness;
- reduce the perception of effort and fatigue.
But it does not replace a proper diet. One key point to remember: feeling stimulated ≠ having energy. You may feel “boosted”… but still lack carbohydrates. For dosage and timing, read our article on caffeine and sports performance.
3 simple snacks to have before training
Back to basics!
1. Zenit matcha tea energy balls
👉 Zenit matcha tea energy balls
- Natural caffeine from matcha tea
- Carbohydrates to support exercise
- Natural energy
Perfect for a morning workout!
2. The Zenit chocolate coffee energy square
👉 Zenit chocolate coffee energy square
Caffeine + carbohydrates + a little protein… A real alternative to pre-workout.
3. A high-caffeine Zenit coffee + a Zenit snack
👉 Zenit Italian-style coffee (whole beans or espresso grind)
A simple and effective strategy:
- a cup of Zenit coffee
- a Zenit snack
or
- iced coffee with maple syrup and milk
- matcha tea with maple syrup and milk
What I recommend as a nutritionist
- Eat before you train.
- Plan your snacks.
- Keep the approach simple.
No need for complicated solutions.
Frequently asked questions
Are pre-workouts necessary?
No. For most people, a carbohydrate-rich snack eaten 30 to 60 minutes before training, with coffee if needed, is just as effective and simpler.
What is a good natural pre-workout?
A snack that provides carbohydrates and a little caffeine: a chocolate coffee energy square, matcha tea balls, or coffee with a snack.
Are pre-workouts dangerous?
Some contain a lot of caffeine or poorly controlled ingredients. Check the caffeine dose and choose a product certified by a third party, such as Informed Sport.
Is creatine a pre-workout?
No. Creatine is effective, but it works when you take 3 to 5 g per day for several weeks, not as an immediate boost before training.
Danielle Dubois, nutritionist
Founder of Zenit Nutrition
References
- Guest NS, VanDusseldorp TA, Nelson MT, et al. International society of sports nutrition position stand: caffeine and exercise performance. J Int Soc Sports Nutr. 2021;18(1):1. PMC7777221
- Kreider RB, Kalman DS, Antonio J, et al. International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine. J Int Soc Sports Nutr. 2017;14:18. PMID : 28615996
- Thomas DT, Erdman KA, Burke LM. Position of the Academy of Nutrition and Dietetics, Dietitians of Canada, and the American College of Sports Medicine: Nutrition and Athletic Performance. Med Sci Sports Exerc. 2016;48(3):543-568. PMID : 26891166