The last reps start to drag, your pump fades, and your focus slips: it’s not always your training plan to blame. If you want to put together the right training drink, you shouldn’t simply add as many powders as possible to your shaker. What matters is workout duration, intensity, sweat loss, nutrition around your workout, and your specific goal. A drink for 45 minutes of weight training needs to be different from one for a long, sweat-inducing, high-volume session.

What a training drink should do

A good intra-workout drink should mainly do three things: provide fluids, support energy needs when necessary, and supply amino acids. It’s no substitute for a balanced diet, but it can be useful when solid food before or during training isn’t practical.

Water is always the foundation. Even moderate fluid loss can affect performance, coordination, and perceived exertion. If you sweat a lot, train in high temperatures, or do longer cardio or muscular endurance sessions, electrolytes - especially sodium - can also help. This mineral supports fluid balance and replaces some of what you lose through sweat.

Carbohydrates and amino acids, on the other hand, aren’t automatically essential. Whether they’re useful depends on the session and your overall daily context. If you’ve just eaten a carbohydrate-rich meal and are training moderately for 60 minutes, you generally don’t need a large intra-workout formula. If you train fasted, plan very long sessions, or combine several workouts in one day, your priorities will be different.

How to put together the right training drink: Start with the basics

For most strength athletes, 500 to 1,000 milliliters of water is a good starting point during a typical workout. The exact amount depends on body weight, room temperature, and your individual sweat rate. Rather than forcing yourself to drink a set amount, it makes sense to take small sips regularly and spread your fluid intake throughout the session.

If you sweat noticeably, train in the summer heat, or work out for more than about 75 to 90 minutes, an electrolyte supplement can be useful. An intense flavor isn’t the only thing that matters. Clear labeling and a sodium dose you can make sense of are more important than an overloaded ingredient blend. Potassium, magnesium, and calcium can round out the formula, but sodium is usually the key factor when it comes to sweat-related losses.

Be careful with very concentrated mixes. Too much powder in too little water can sit heavily in your stomach. That’s especially unhelpful if you’re doing heavy compound lifts, intense intervals, or a high-volume workout. A drink shouldn’t just make sense on paper - it should also be easy to drink during exercise.

Carbohydrates: Adjust energy to the demands of your workout

Carbohydrates in a training drink can be a reliable source of energy during long or very intense sessions. They’re especially relevant if you start training with low glycogen stores, deliberately do a lot of training volume, or plan another athletic effort afterward.

A practical starting point is around 20 to 40 grams of carbohydrates per hour. You may need more during very long endurance sessions or high-volume training. For a classic 60- to 75-minute hypertrophy workout, smaller amounts are often enough - or none at all if your pre-workout nutrition is on point.

Fast-absorbing carbohydrates can work, but some athletes find them very sweet or experience stomach issues. High-molecular-weight carbohydrate sources such as Cluster Dextrin® are a popular choice because they dissolve well and are pleasant to drink for many people. Still, individual tolerance is what matters. Don’t try a new amount for the first time at an important competition, during a PR attempt, or in a particularly hard session.

If you want to reduce body fat, you don’t have to avoid carbohydrates during training altogether. What matters is your energy balance over the day and the week. If a moderate amount of carbohydrates helps maintain training quality and reduces cravings after your workout, it can make sense even while dieting. If your workout is short and your calorie target is tight, water with electrolytes is often a better fit.

EAAs, BCAAs, or protein: What works during training?

Amino acids in a training drink are especially worth considering if it’s been many hours since your last protein-rich meal, you train fasted, or you find it difficult to meet your daily protein needs. Essential amino acids, or EAAs, include all the amino acids your body can’t produce itself. That makes them more complete than BCAAs, which consist only of leucine, isoleucine, and valine.

BCAAs may be useful for people who tolerate them well and want to use them deliberately. However, muscle protein synthesis also requires the other essential amino acids as building blocks. If you’re looking to ensure a comprehensive supply of amino acids, EAAs or a protein-rich meal around your workout are usually a better choice.

A whey shake before or after training can also serve the same basic purpose. Timing matters less than your total daily intake. As a guideline, around 1.6 to 2.2 grams of protein per kilogram of body weight per day is suitable for many adults who strength train. Your training drink should complement this foundation - not distract from it.

Creatine doesn’t have to go in your shaker

Creatine is one of the best-researched ingredients in strength and power sports. Its effects, however, don’t depend on whether you drink it during your workout. Consistent use is what matters. Three to five grams of creatine monohydrate per day is a well-established range for most users.

You can add creatine to your training drink if it helps you stick to your daily routine. Taking it with breakfast, after your workout, or alongside another regular habit works just as well. High-quality creatine monohydrate with clear sourcing and verified raw material quality matters more than artificially complicated timing.

Pre-workout boosters and pump ingredients don’t automatically need to be part of your intra-workout drink, either. Caffeine is more useful before exercise than during it, since taking it late can affect your sleep. For long-term recovery and performance, good sleep is far more valuable than trying to rescue an evening workout with another dose of stimulants.

Four practical scenarios

The best way to plan a training drink is to start with how you’ll use it:

• Regular strength training for up to 75 minutes: Water is often enough. If you sweat heavily, electrolytes can be a useful addition.
• Long, high-volume hypertrophy session: Water, electrolytes, and 20 to 40 grams of well-tolerated carbohydrates can support energy and encourage you to keep drinking.
• Fasted morning workout: Water plus EAAs can be a practical option. For longer or more intense sessions, you could also add carbohydrates.
• Endurance training, team sports, or two workouts a day: Fluids, electrolytes, and carbohydrates clearly take priority. The exact amount depends on duration, intensity, and sweat loss.

Common mistakes with intra-workout drinks

The most common mistake is taking too much. More powder doesn’t automatically mean better performance. A shaker with carbohydrates, EAAs, creatine, electrolytes, pump ingredients, and several flavors can become unnecessarily complicated and strain your digestion. Build your mix gradually and check what actually makes a difference.

It’s also easy to mistake thirst for a need for energy. If your performance drops, it doesn’t automatically mean you need carbohydrates. Maybe you didn’t get enough sleep, your pre-workout meal was too small, or your training volume is too high for your current recovery status. A training drink is a precise tool, not a substitute for the basics.

Pay attention to your overall intake, too. Carbohydrates in your shaker add calories, electrolyte products can contain varying amounts of sodium, and amino acids can supplement but not replace a balanced diet. Clear dosing makes it easier to assess your intake realistically - a key quality standard that MST Nutrition also follows in its performance-focused formulas.

Start simple: water, electrolytes if needed, then carbohydrates or EAAs depending on the demands of your workout. If you track your performance, how your stomach feels, and your recovery over several weeks, you’ll end up with more than an overloaded shaker: you’ll have a training drink that suits your body and your workouts.