2007-03-02 10:07:46 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
Because the process of rubbing creates friction which creates heat. Your skin trys to remove the heat so more blood arrives at the area to move the heat away.
2007-03-02 12:53:58 · answer #1 · answered by pre med student 2 · 0⤊ 0⤋
The friction between your skin and hand, arm, etc causes heat. The heat stimulates your nerve cells and it causes more melalin (Pigment) to form. Thus making it red.
2007-03-02 23:26:05 · answer #2 · answered by Anonymous · 0⤊ 0⤋
the friction of the rub i would say.When you rub something it gets hot.Heat opens the pores,so they can counter act the heat with our build in coolant-system
2007-03-02 19:48:28 · answer #3 · answered by Heike P 4 · 0⤊ 0⤋
because when u rub it, it will make dead skin and create a rash
2007-03-02 18:12:44 · answer #4 · answered by Richard G 1 · 0⤊ 0⤋
because the body thinks that you have a wound so the blood runs to the surface in order to disinfect the wound.
2007-03-02 18:17:42 · answer #5 · answered by angie n 2 · 0⤊ 1⤋
because the blood comes to the surface
2007-03-02 18:15:24 · answer #6 · answered by ninekittys 3 · 0⤊ 0⤋
you stimulate blood flow. as more blood gets closer to the skin, it changes the color.
2007-03-02 18:16:03 · answer #7 · answered by MrWiz 4 · 0⤊ 1⤋