Man stabs himself to death due to depression. Roraima.

Are you retarded? You absolutely can bite your fingers right off if you want to, but generally people don't want to. Your brain gives zero shits about it beyond pain and conscious reasoning that losing a finger would suck. You can also hold your breath until you lose consciousness, but because breathing is also a subconscious function, your body will attempt to start breathing once you pass out. Note that I said attempt, because hypoxia can give you brain damage and cause spasms and other issues that would interfere with breathing.

Some bite their fingers off, same as any type of self mutilation. If you want to do it? you do it.

Yes, the function of your brain, does fight to survive, it's also natural instinct to do so. In breath play, you can easily choke yourself (or another) out - add a noose or whatever? equals full asphyxiation and usually death.

To self-stab your vital organs and arteries obviously allows blood to flow freely and mostly a slow death (dependant on how long the blade, force applied and direct and hard aim)

When you suffer depression and severe hopelessness, you enter a terribly dark place - anything is possible when at your lowest. More so if you are determined to end your life. So this makes total sense to be able to stab yourself over and over. If you look, you'll see exactly where he began stabbing his own body - in his case? the final few stabs were enough to fully end the job.

The brain then begins to shut down as you are dying, hence the death throes and body spasms. Thus the knife has caused severe and fatal damage to internal organs et al, add perhaps a heart attack as you're body goes into mortal shock, and finally death.

So all in all? makes a lot of sense.

well he “literally” just stabbed himself . Open your eyes .. Your mind might be weak but not all kinds are the same

You're joking right? Please tell me you're joking "how did the man stab himself???" He took a knife and planted it in his chest.

Maybe mentally ill, who knows