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Comparison of Hi-Tech polyester fabric and cotton fabric while doing active sports.
In order for the heat to be transferred from the body to the outside and to the environment (to cool down during or after the training), it must reach the outside environment, that is, it must not be blocked by the clothes.
For others, and in most cases, wearing synthetic clothing is a better option for exercise than cotton. If you don't believe the experts, give it a try. Put on a cotton t-shirt to go to the gym and you should eventually find you are soaking wet and uncomfortably hot. Your performance may also decrease.
Let's talk about cotton. Why is it a bad choice? What's better? Why does it matter?
We've talked about dressing for fitness before (see the article here for a refresher), and we noted that 100 percent cotton isn't the best choice for workout gear.
Let's take a closer look at this issue so that you can understand more clearly why you should abandon cotton and choose sportswear made of high performance technical fabrics when doing active sports.
Cotton, Synthetic and Thermoregulation:
First of all, you already know that Thermoregulation is all of the mechanisms that control body temperature. Take a look at how our body regulates heat, called thermoregulation, and the importance of this process. Thermoregulation is the process by which the thermoregulation center in the hypothalamus readjusts body temperature in response to small deviations from a set point.
While it's true that many people turn to 100 percent cotton clothing because it's comfortable, easy to wear and wash, inexpensive, and breathable (Is it really breathable?), these aren't the ideal material for exercise. Also, a T-shirt or Leggings made of cotton fabric will lose its breathability as you perspire.
In other words, when our body temperature starts to rise during a workout, the thermoregulation system starts to work and makes a serious effort to get the heat out of the body and return it to normal.
Evaporation is the main way the body regulates itself during exercise. When your body is warm, you sweat more, which helps you cool down. 1 However, for sweat to cool your body, it must be able to evaporate from the skin. Sweat remaining on the skin does not lower your body temperature. And the more your body is covered with clothing, the harder it is for sweat to evaporate and the body to cool.
Sweating While Cotton
Yes, cotton absorbs sweat, but the sweat stays there and wets the fabric. It doesn't go away from your skin. In other words, cotton does not absorb moisture, that is, it does not pull sweat from the skin. It does not support quick drying of sweat.
This is where synthetic materials come in very handy. They absorb moisture and draw sweat from the skin, clothing and the environment, helping to dry faster. Synthetic fabric releases sweat instead of trapping it and provides evaporation, which is the important cooling process.
Sportswear Made of Technical Fabrics:
There are many alternatives to cotton, synthetics that will help keep you cool and dry and not hinder thermoregulation.
Some of these are blends and include some cotton to make a material feel nicer. As long as most of these blends aren't cotton it's fine.
The Effect of Cotton and Technical Polyester Fabric on the Skin:
If your skin is sensitive or sometimes irritated when you sweat, synthetics reduce this effect. Rubbing the dampened cotton on the skin is quite uncomfortable.
Key Difference Between Cotton and High Performance Technical Clothing:
Clothing products called technical fabrics (or high performance sportswear) keep body temperature lower than cotton shirts during longer workouts. If you go out in your normal cotton clothes on a hot day, you will start to sweat. For the rest of the day, you will feel a wetness that almost never goes away. You may also notice that cotton clothing stretches and loses its shape. Also, clothes that are closer to your body are safer than loose ones. If you're only trying to achieve one success, imagine how much more you can realize.