Supporting Football game as a nurse

I joined football competition which a friend of mine held for homeless people who cannot have recreation activity for some reason. This is second time to participate in it because I joined last year as a nurse too. When I arrived at football ground, I found that 15 football teams more than 200 people gathered to play. It was very hot and some players suffered from heat stroke, so I encouraged them to drink more water and take a rest in the shade for a while. Fortunately, there were not players who were serious injured or got serious sick. I not only worked under the brazing sun but I also moved from house to football ground by bike, so when I came back home, I found myself exhausted.