Do you play any sport?

The last 4 years I am jogging regularly once in a week, and the peak is the Halmarthonin at the Wachau (sorry, this is not clear for myself, what you wanted to say). My time is not so good: 1 hour 50 min but it isn't  not so important. Last year I began hiking and first time one climbed 3000m! It was great and wonderfull. I will again climb to a 3000 Peak in Tyrol this year. Now (I would suggest recently) I also started (what?) training in a Fitness Center and it's great fun to have a healthy fitness. (gesunde fitness doesn't sound good for me, sorry). I would offer "...it's a great fun to be occupied with a healthy fitness" or "... fun to have a healthy body".