Cotton is a great choice for a light training session because they are extremely breathable and gentle on your skin. They are also cheaper and easily available. However, for an intense session, they may not be an ideal choice. They lose shape very easily and are soaking wet by the middle of the workout, which makes them very uncomfortable to be in. They also do not last long.
A gym clothing set that is too tight will leave you feeling uncomfortable. While something too loose will make you fidget and hamper your focus. Losing focus or being uncomfortable can dampen your performance or worse, cause accidents because you were busy adjusting your gym clothes.
If your gym clothes do not allow you to perform the full range of motions, why invest in them? Choose gym clothes that are super stretchable and allow maximum mobility. They should be designed to allow a full range of motions, while still holding their shape.
This one’s a no-brainer! However, it is the most important. Make sure you invest in a comfortable set of gym wear. Try them, move around, flex. Then decide if you want to buy them.