Running

Before running or make another doing other sports, I use to always warm up. But some times after running I´m not used forgot to stretch. (Does it still happen now? If not, you'd better use past tense.) So I had an injury and since then I've always remembered to stretch my muscles after make an sport doing sports. [Remember you Do a sport instead of making a sport.]

Running in mountains is in currently in fashion. When you leave to walk work out in the mountain, it's almost always more frequent to see more people running than walking. Running is the hardest but the quickest way. I often go out and running over the mountains and I can tell you that´s really beautifull. It's really hard when you are climbing but when once you are on the top, running is like floating.

Buen trabajo. Mucho animo. :)

By the way I love running too. I can imagine how good it feels to do exercise while enjoying the view. But there's no mountain near my home, lucky you. ;)