I'm preparing for a breath holding competition and this is my training. Today I train with a cigarette, and I not find it difficult because I am a long-time smoker. This is also the easiest way to know for sure how much someone kept his breath because there is no cheating, the white smoke is clearly visible. I inhale the smoke, preparation-attention-now and I put my hand over my mouth so I'm pitching the nose. This is training so I repeat this process over and over again and every time when I take my hand off my mouth the cloud of white smoke comes out of my mouth ...