khronik is spot on, well said.

Be careful about the difference between a human feeling cooler and actually reducing air temperature. People feel cooler in the breeze from a fan because there's water evaporating from the skin- not because the air is any cooler due to the air motion. Fans actually add heat to air by way of their motors.

Same for heatsinks or other chunks of metal. Your skin surface is about ~80-85F. When you touch something which has good heat conductivity and the ambient air temp is cooler than your skin, what you're touching feels cool- to you- but it is actually no cooler than the ambient air temp.