Hydration and sports: How much water should you drink per day, and how should you do it?

Hydration is one of the most important factors affecting health, athletic performance, and overall well-being. For athletes, maintaining fluid balance is especially important, as intense training sessions significantly increase water requirements. In this article, you’ll learn why hydration is so important for athletes, how much water you should drink each day, and how to do it properly.

Why is hydration important for athletes?

Water plays a crucial role in the human body, and it is even more important for athletes. The main reasons are:

• Regulating body temperature: During exercise, the body sweats to cool itself, which leads to fluid loss.
• Improving metabolism: Water is needed to transport nutrients to cells and remove waste products.
• Supporting muscle function: A lack of water can cause cramps and reduced strength.
• Injury prevention: Hydration helps maintain the elasticity of ligaments and joints.

Research: According to the American College of Sports Medicine (ACSM), a fluid loss of just 1% of body weight can impair thermoregulation, while losses of 3–5% can reduce physical performance by 20–30% (ACSM, 2021).

Effects of hydration on physical performance

Even a small fluid loss of 1–2% of body weight can negatively affect athletic performance. Symptoms of dehydration include:

• Reduced endurance.
• Increased fatigue.
• Reduced concentration.
• Poorer coordination.

Research: A study in the Journal of Athletic Training shows that dehydration of 2% of body weight reduces aerobic performance by 10–20% (Journal of Athletic Training, 2018).

How much water do athletes need?

The optimal amount of water an athlete needs depends on factors such as age, weight, training intensity, and climatic conditions. General recommendations are:

• At least: 30–40 ml of water per kilogram of body weight per day.
• During exercise: An additional 0.5–1 liter per hour of intense physical activity.
• After training: Replenish lost fluids by drinking 1.5 liters of water per kilogram of weight lost.

Source: The National Academy of Sciences recommends an individualized approach to hydration, especially for athletes in hot climates (National Academy of Sciences, 2019).

Proper hydration before, during, and after exercise

1. Before exercise: Drink 300–500 ml of water 2–3 hours before activity to ensure your body is well hydrated.
2. During exercise: Take small sips every 15–20 minutes. Isotonic drinks help replenish electrolytes during intense activity.
3. After training: Rehydrate within the first two hours after your workout. Mineral-rich drinks speed up recovery.

Research: Sodium-containing drinks promote fluid intake after exercise (European Journal of Sport Science, 2020).

Types of fluids for optimal hydration

Not all fluids are equally effective for hydration. The main types are:

• Water: The best choice for moderate physical activity.
• Isotonic drinks: Contain electrolytes and carbohydrates, ideal for longer workouts.
• Hypotonic drinks: Suitable for light activities.
• Electrolyte solutions: Useful for recovery after intense workouts.
• Tea or coffee: Allowed in moderation, but should not replace water.

Source: Hydration strategies vary depending on the type and intensity of the activity (Gatorade Sports Science Institute, 2019).

Signs of dehydration and how to avoid it

Signs of dehydration include:

• Dry mouth and thirst.
• Reduced performance.
• Headaches and dizziness.
• Fatigue and irritability.
• Dark urine with a strong odor.

How to avoid dehydration:

• Drink water regularly throughout the day.
• Use bottles with markings to monitor your water intake.
• Increase your water intake in hot weather and during intense workouts.

How do you monitor hydration status and adjust your water intake?

Effective methods for monitoring hydration status:

1. Assess urine color: Pale yellow indicates normal hydration.
2. Weigh yourself before and after training: A loss of more than 2% of body weight indicates the need to increase water intake.
3. Use apps: Hydration tracking apps can remind you to drink.
4. Individual adjustments: Increase or decrease your water intake depending on the weather, type of training, and how you feel.

Source: Hydration monitoring methods are described in the Clinical Journal of Sport Medicine (Clinical Journal of Sport Medicine, 2021).

Where can you buy high-quality supplements for health and beauty?

For general health, athletes can use high-quality supplements from MST Nutrition use, which are available to customers in Europe.

Customers in the UK can purchase these products through the official MST Nutrition UK website. These supplements support your health, recovery, and athletic performance.