If your laptop is very hot and the fan is always on the go, you can have problems. When it overheats, not only does your computer slow down to protect itself, but you actually damage the parts inside - over time this can reduce the life of your computer by a year.
Use your laptop on a table instead of your lap as clothing can restrict the fan. And leaving your laptop on for days on end is also a bad idea - it needs a rest.
Glamour, June 2014
