aiming for the participants of the trial. how they should be. this is the link.
https://steemit.com/life/@maxmax/technical-guidance-for-sports-participants-820d680fd4f1b
https://steemit.com/life/@maxmax/technical-guidance-for-sports-participants-820d680fd4f1b
https://steemit.com/life/@goodhaikal/this-image-is-simple-for-you-who-see-this-post-035-4f16cdf273282
![IMG_20180611_141624.jpg](https://images.hive.blog/768x0/https://cdn.steemitimages.com/DQmRe4Z3kQWJxX9Zh9aGeJwfd1bQCdwtnFM1zjkKXswe5CL/IMG_20180611_141624.jpg)