Hi just started this and reading about this.You are supposed to make sure not to breath in to soon or to late but doesn't say when.should I breath in for a few seconds then push button while I continue to breathe.? Also do you keep it in your mouth while holding breath for 10 seconds or take it out.? Sorry for these dumb questions but I ave anxiety and am really nervous about taking this.Can someone who takes this please let me know.Thanks,so much.