Keyboard gets hot

i bought an Inspiron 7737  about 2 weeks ago, works perfectly,windows 81.

My question is about my keyboard getting hot at the middle of the keyboard, this only happens on Second life, other than that its usually slightly warm.

I ran a Real temp on it and it shows temps 45C    44C    Distance to max  45C     46C 

                                                                     GPU   53C

The temperatures were taken while on Second Life, i know they look ok, my other one ( toshiba) used to run about 60C on Second Life

Even though the Temps seem good why would the keyboard get so hot, i have never noticed that on all the laptops i have owned, ( Toshiba, HP, and another HP ) i have used a laptop on Second Life since 2006 staying on many ours while creating clothes and setting up shops , but not once have i experienced a hot keyboard.

As i said this only happens on Second Life.

Is this normal ?