[AzAmerica]

Simples, rapido e facil.

https://sampwiki.blast.hk/wiki/SetTimerEx
https://sampwiki.blast.hk/wiki/SetPlayerHealth

Para ser Mais Exato:

pawn Код:

forward VidaComerMenos(playerid);

public OnPlayerConnect(playerid)//Ao conectar o timer comeзa a correr.
{
    SetTimerEx("VidaComerMenos", 60000, true, "i", playerid); // VidaComerMenos = CallBack, 600000 = 1 Min
    return 1;
}

public VidaComerMenos(playerid)
{
    new Float: Vida;// Getar Vida Do Player
    GetPlayerHealth(playerid, Vida);
    SetPlayerHealth(playerid, Vida-10);//Diminui a vida do player em -10
}

Simples *-*