Of course, I've explained this several times with the same intention but I'm always happy to be able to give more warnings and for more users to reach out, let me clarify one thing, both a SCUBA mask and a plastic bag, both can work, the purpose is for you to find a way to perfectly close any exit avoiding oxygen from entering, a SCUBA mask makes that easier for you compared to a bag. What you really need to keep in mind is that the brain needs oxygen and what this method does is cut off the flow of oxygen causing you to become unconscious, the moment you are unconscious and that flow is cut off you are damaging your brain. The larger the flow, the worse the consequences will be.
In my case it can be considered self-sabotage, I used a plastic bag, lots of rubber bands and tape and I really could have died but something stopped me, I'm not sure if it was fear, the famous Survival Instinct (I doubt it) or an unknown feeling that made me stop everything at the last moment, I don't remember exactly how long I left it open, but it was between 15-30 seconds I managed to close it quickly due to that unexpected action but it was too late causing me to become unconscious, I woke up with an extreme headache, I was unable to move from the bed for 3 days, I felt extremely weak and when I recovered I could notice how my vision worsened, from 2023 until now I still see things blurry, my vision was permanently damaged. I remember preparing my entire kit before my 19th birthday, ready to leave this world. Even though I planned it fairly well, I never considered the difficulties, consequences, and their effects. On one hand, I'm disappointed and somewhat annoyed that I survived, but I always calm myself by feeling grateful for only having ended up this way and reminding myself that I could have ended up as a vegetable. I don't want to drag this out too long.
If anyone is thinking of contacting me about this method, I'll ignore it. I'm really sorry, but I'm just someone who wants to learn CTB. I don't have a broad and extensive knowledge of it, and it would be the last straw if someone were to risk ending up with vegetable following in my footsteps. This world has been cruel to so many people here, and I would only be putting at risk the fate of souls who have already suffered for the rest of their lives as a vegetable. To everyone reading this, take care and have a nice day. Sending a big hug for yall and good luck, whatever your decision, peace! ♥