An increase of flexibility for swimming helps elongate the swimmer to propel faster and glide through the water easier. If the swimmer is inflexible, they won't be able to stretch as far as they should. But, if they were flexible, it'd be easier and much simpler.
I like MMA, high level of flexibility would affect the performance in a positive way. MMA requires you to be flexible for both offense and defense, and have a wider range of techniques than the person who is less flexible, therefore having more advantage. The benefits of MMA as a sport is you learn to fight, you get fit, and you are more flexible.
Explanation:
Since it can be any sport, I did MMA, and got 100% I hope this is useful to you or someone else :)
