Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to warm up your voice [title] Keep good posture. [step] In order to have the best air flow and therefore the best sound, you need to have good posture. This goes for when you're both sitting and standing.

Ending1: You should also be so active that you're not engaging your mind in other things, like paying attention to your breathing. If your posture is bad, you could say something, such as " that's the back i put all of my hard work into. Ending2: If you have bad posture it will just make you sound nervous and uncomfortable. [substeps] Place your feet behind your at least six inches from the window. Ending3: Imagine a line at the top of your head, through your back, holding you up. [substeps] If you're standing, keep your feet flat on the floor, shoulder width apart. Ending4: You'll have to take time to relax every day, so don't neglect this when you're playing games, preparing meals or chatting with your friends. [substeps] When you're not playing games, keep good posture in all situations.

Answer format: ending1/ending2/ending3/ending4