Warm up

 Hello Camille,can i also warm up my vocal when sitting  because i play guitar and sometimes i have to use it to warm up my vocals  

Yes, you can! If possible, sit on the edge of your chair so your feet are on the ground. Keep your spine long and be careful of the tendency to reach your chin forward or roll your shoulders forward. We want to be just as energized and tall in our seated posture as in our standing!