[Wizzy951]

pawn Код:

new 
    Float:health;
    GetPlayerHealth(playerid, health);
if (health <= 10.0)
    {
        ApplyAnimation(playerid,"PED","WALK_DRUNK",4.1,1,1,1,1,1);
    }
else (health > 10.0)
    {
        ClearAnimations(playerid);
    }
    return 1;
}

And actually I got this from sa-mp wiki, why don't you search more ?