If you teleported you'd create a 'person-sized' vacuum in the space you previously occupied. This would lead to a rapid cooling down of the air and then rapid heating as the air fills the void and collides on itself. This would create an incredibly loud bang that would make people's ears bleed. When you arrive at your teleportation destination your body would displace the air in that position in an instant making it super hot. If you don't have a superpower to withstand the heat, you'd teleport and burn to death. damn.