Yerba Mate Before a Workout – When to Drink It, How Much, and Does It Work?

We mainly hear from two groups of people. The first has been drinking yerba for years and simply wants to know if the timing matters before heading to the gym. The second is just switching from coffee and asks directly: can this replace a pre-workout? The answer doesn’t fit in one sentence, but let’s start with the most important fact: what happens in your body after yerba mate before a workout differs enough from the effect of coffee that it’s worth breaking down step by step.

What yerba mate actually does before exercise

Caffeine in yerba mate leaves doesn’t occur alone. It’s accompanied by theobromine and theophylline, two related xanthines also known from cocoa. The practical effect is that the boost arrives more slowly than after espresso, but lasts longer and rarely ends in nervous hand tremors halfway through a set. On top of that, polyphenols and tannins slow down the absorption of caffeine in the gut — hence the impression of “even” energy instead of a sharp peak and crash.

The mechanism that interests athletes the most is fat acid mobilization. Xanthines stimulate the sympathetic nervous system, catecholamine levels rise, and the body reaches for fat as fuel more readily instead of relying solely on glycogen. In practice, this is similar to what coffee does before cardio, only spread over a longer period of time — which is why long-distance runners and cyclists tend to praise this infusion more often than bodybuilders.

When to drink yerba mate before a workout

Caffeine from the infusion reaches peak blood concentration after about 45–60 minutes, which is later than from coffee (usually 30–45 minutes there). If your workout starts at 6:00 PM, it’s worth brewing your matero around 5:00–5:15 PM. This isn’t a rigid rule — for some people sensitive to caffeine, 20 minutes is enough, while for others the effect is felt only after an hour. The first week is the best time for your own experiment: note the time you drink it and how you feel during your first warm-up.

The second matter is the number of cebadas, meaning subsequent refills of the same portion of dried leaves. The first round has the most caffeine, each subsequent one a bit less. Someone who wants the full effect before a heavy leg workout should drink at least two to three of the first rounds, not just one sip before heading out the door.

How much yerba before a workout and whether on an empty stomach

A standard portion is 25–50 g of dried leaves per matero (usually one third to half the vessel’s capacity), poured with water at 70–80°C, never boiling water — that spoils the bitter aftertaste and part of the active compounds. For intense strength training, a sensible starting point is the lower end of this range, because stronger caffeine on an empty stomach raises resting heart rate for some people more than is comfortable during a warm-up.

If you train in the morning and usually drink your matero right after waking up, it’s worth reading our separate article about drinking yerba mate on an empty stomach — there we explain who this is safe for and who should add something to their stomach before the first sip. With intense physical effort on an empty stomach, there’s also the risk of a blood sugar drop, so if the workout is tough, a banana or a handful of oatmeal 30 minutes beforehand isn’t overkill.

Yerba mate or coffee before a workout — the real difference

Coffee acts faster and hits harder in the first 20 minutes, which works great for short, explosive training — a sprint, one heavy all-out set. Yerba mate spreads energy over a longer time and rarely gives you the “wall” effect after 90 minutes, which is why it performs better in longer sessions: running over 10 km, cycling, strength training with many sets spread over an hour or more. We’ve described the full comparison of taste, caffeine, and who benefits more in the article Yerba Mate or Coffee.

The type of workout matters

For strength training, what mainly matters is the peak caffeine moment, so you drink it and head to the gym within an hour. For running and cycling, what matters is the release over time — this is where yerba beats coffee, since you don’t need to finish another cup halfway through your route; a thermos of hot water and a matero at hand is enough, or cold tereré in summer. For combat sports and interval training, heart rate stability matters — a sharp spike after espresso can feel unpleasant combined with an already elevated exercise heart rate, so yerba’s gentler onset works better here. You can read more about the differences between disciplines and post-workout recovery in our article Yerba Mate for Athletes.

When you need a stronger kick — guarana

Some people, especially during morning workouts after a short night, look for something stronger than plain yerba. That’s why we created Yerba Mate Ultra Energy with Guarana — guarana seeds add extra caffeine that’s released even more slowly than that from the holly leaf, so the effect lasts even through a long, tough workout.

Check out the product: Yerba Mate Ultra Energy – Guarana

If your workout is part of a weight control plan and not just about energy, Yerba Mate Slim Fit is a good fit — our line with added ingredients that support metabolism, which we cover in more detail in the article about the best yerba mate for weight loss.

Check out the product: Yerba Mate Slim Fit

Hydration — the most common mistake

Caffeine has a mild diuretic effect, so during a longer, sweaty workout, matero alone won’t be enough as your only fluid. The rule we follow ourselves: yerba before the workout, plain water during and after. You can bring a thermos of yerba to the gym, but keep a bottle of water next to it — it’s not an either-or situation.

The most common mistakes when drinking yerba before a workout

The first and most common: water that’s too hot. Many people pour boiling water straight from the kettle over the dried leaves because they’re in a rush before heading to the gym, and this burns off the bitter compounds and part of the flavor benefits, not to mention the active ones — a temperature above 85°C can ruin the whole infusion. The second mistake is drinking too late, literally at the gym door, expecting an instant kick — caffeine from the infusion needs time, so it’s better to brew earlier and drink it calmly than to gulp it down hastily in the locker room.

A third, less obvious mistake is combining a strong matero with a pre-workout supplement containing a high dose of caffeine (200 mg or more). The combined caffeine from both sources can, in more sensitive people, cause heart palpitations or excessive stimulation that hinders focus on exercise technique instead of helping it. If you reach for a ready-made pre-workout, treat yerba as an alternative for that day, not an addition.

What about post-workout recovery

Here yerba’s role is different — it’s no longer about stimulation, but about antioxidants. The infusion contains polyphenols which, according to available studies, help reduce oxidative stress associated with intense exercise. Some people we talked to at trade fairs drink a weaker infusion in the evening (less dried leaves, shorter brewing time) specifically with recovery in mind rather than another dose of energy — a sensible approach, as long as it doesn’t interfere with sleep.

Post-workout hydration is a separate matter — the infusion alone won’t replace it, but the circulating group-drinking ritual, known from the Amerequay of Argentina or Uruguay, has the advantage of forcing slower, calmer drinking than gulping down an isotonic drink. This actually supports mental recovery after a tough session, even if it’s hard to measure in a lab.

Frequently asked questions

Does yerba mate before a workout raise blood pressure?
Slightly, like any dose of caffeine — in a healthy person the increase is temporary and falls within the body’s normal response to exertion. If you have high blood pressure, it’s worth consulting the dose with a doctor.

Can you drink yerba right after a workout?
Yes, but if your plan involves falling asleep quickly after an evening workout, it’s better to skip caffeine 5-6 hours before bed.

How much caffeine does one matero have before a workout?
It depends on the amount of dried leaves and the number of cebadas, but a typical 30-40 g portion in the first round gives roughly as much caffeine as a medium-strength coffee — more in our article about caffeine content in yerba mate.

Will yerba mate replace a pre-workout with creatine and citrulline?
Not fully — these supplements work through a different mechanism (strength, muscle pump). Yerba mainly provides energy and focus, and they can be combined.

Can children and teenagers who play sports drink yerba before a workout?
Due to the caffeine content, we advise against regular drinking for children — this is a topic for adults and older teens, after consulting a parent.