1- since i was a kid 2- breathing exercises and tongue exercises 3- i never stutter when m talking to someone m comfortable with i only stutter with people i dont know or when m trying to say a lot of things at once 4- as i said i dont rlly stutter with ppl m comfortable with and even if i do its very minor 5- not every stutter is the same, for me i never stutter on letters like d-d-d-d… i only get blocked and i feel like the word cant go out from my mouth and my breath stops