Running

I believe that everybody should run at least once time per (a) week. Not (just/only) because it's w healthy, but because it feels good being alone; breathing fast with the wind blowing all around from everywhere, and with the sound s of the your heartbeat following the sound s of the your footsteps in the street. It makes all the problems go away and everything slowdown and so that you feel stronger and more prepared for what comes next.

one time = once

two times = twice

'Once a week' sounds much more natural than 'one time per week'.

Running

I believe that everybody should run at least one time per week. Not because it's healthy, but because it feels good being alone, breathing fast, with the wind blowing from everywhere and with the sounds of the heartbeat following the sounds of the steps in the street. This makes all the problems go away and everything slows down. And you feel stronger and more prepared for what comes next.

Good job! The "ea" in the word "breathing" is pronounced like the "i" sound in the Spanish word "amigo".  It's a long "ee" vowel pronunciation.  The "i" in the word "wind" is a short vowel pronunciation.  It is pronounced similiar to the "e" in the Spanish.