Hi ! Does someone knows or practices triathlon ?
This is the sport which consists of swimming, riding and running in one sitting.
I really love this sport, and I practised it until I began my college course.
It allows you to make a wide range of things, which is less boring, and to mobilise all the resources and muscles of your body.

Image : Runners at the St Léger triathlon, Fra (http://triathlon-avenir-idf.over-blog.com/article-1011-selectif-idf-triathlon-st-leger-74316741.html)