How to choose the right sports clothing to improve your performance

When we think about improving athletic performance, we often focus on training, nutrition, or rest.

However, there is a factor that is often underestimated and that directly influences how we perform: sports clothing.

Choosing the right clothing is not just a matter of aesthetics or comfort.
The garment you wear can influence:

• body temperature regulation

• sweat evaporation

• freedom of movement

• prevention of chafing

• perception of effort

In endurance sports, where small differences can translate into minutes or even hours, the correct choice of equipment makes a big difference.

Why sports clothing influences performance

The body needs to maintain a relatively stable internal temperature to perform at its best.

During exercise, especially in running, trail running, or cycling, heat production increases considerably.

If clothing does not facilitate perspiration and thermal dissipation, the body must allocate more resources to thermoregulation.

This translates into:

• increased heart rate

• greater fatigue

• increased perceived effort

• performance drop

Therefore, clothing should be understood as a performance tool.

1. Choose the right fabric

This is probably the most important point.

Not all fabrics work the same.

Technical fabrics

For training and competition, it is ideal to use technical fabrics designed to wick away sweat.

The best materials are usually:

• technical polyester

• polyamide

• elastane in combination

These allow for:

• quick drying

• better ventilation

• less moisture accumulation

Avoid cotton for high intensity

Cotton absorbs sweat and retains moisture.

This generates:

• heavy feeling

• excessive cooling in winter

• higher risk of chafing

For endurance sports, it is usually not the best option.

2. Fit: neither too loose nor excessively compressive

Clothing should accompany movement without limiting it.

A garment that is too loose can cause:

• chafing

• discomfort

• aerodynamic resistance

One that is excessively tight can compromise comfort during long runs.

The key is an ergonomic fit.

3. Clothing according to temperature

This is where most mistakes are usually made.

Summer and heat

In high temperatures, prioritize:

• ultralight fabrics

• light colors

• high breathability

• flat seams

This helps reduce thermal stress.

Additionally, as the temperature increases, so does the need for a good hydration and carbohydrate strategy.

Therefore, the choice of clothing and nutrition must go hand in hand.

Winter

In winter, the strategy changes completely.

The best option is to dress in layers.

First layer

breathable and snug-fitting

Second layer

thermal insulation

Outer layer

protection against wind or rain

This allows maintaining temperature without compromising mobility.

4. Chafing and critical areas

Over long distances, this point is fundamental.

The most sensitive areas are usually:

• armpits

• groin

• nipples

• inner thigh

• feet

Look for garments with:

• flat seams

• soft fabrics

• light compression

5. What clothing to choose depending on the sport

Running and marathon

Prioritize lightness.

• technical shirt

• breathable shorts

• technical socks

Trail running

Here, functionality is key.

• resistant fabrics

• integrated pockets

• thermal protection

Cycling

Aerodynamics gains importance.

• tight-fitting jersey

• quality cycling shorts

• breathable fabrics

6. The importance of climate on performance

A poor choice of clothing can increase internal body temperature and directly affect performance.

In fact, heat can increase glycogen utilization and make the hourly carbohydrate strategy even more important.

Therefore, in summer, it's not just about what clothes you wear, but also how you plan:

• hydration

• sodium

• energy gels

7. Common mistakes

Wearing new clothes in a race

Never do it.

Always test clothes on long runs.

Overdressing

Very common in winter.

Excess layers quickly raise the temperature.

Choosing for aesthetics

Performance should be the priority.

Conclusion

Knowing how to choose the right sports clothing can improve comfort, reduce fatigue, and optimize performance in any endurance discipline.

Clothing does not replace training or nutrition, but it can enhance both.

In sports like running, trail running, or cycling, small details such as fabric, fit, or breathability can make all the difference.