At what temperature should i maintain my 2013 Macbook Pro 13'? I am scared of the temperature overheating :(

Temperature will vary depending upon the type and number of applications that you are using. CPU/GPU can vary from about 40°c± to well over 90°c±. The MBP is designed to cope with these extremes. In those rare instances where the temperatures exceed the design limits, internal sensors will shut down the MBP before it comits Hari Kari.

Skype, games, video are common CPU/GPU heat producers. The body of the MBP is part of the cooling system and will get very warm but that is a means of dissipating the internal heat.

If you are engaged in prolonged periods of time with such applications, consider getting a cooling pad. I do not recommend and fan control devices. I have faith in the Apple design engineers in regards to fan operation.

Here is some more information on this topic:

http://support.apple.com/kb/HT1778

Ciao.

I have the same issue all the time., about 200 - 221 ˚F (93 - 105 ˚C). I'd like to have the same faith; but let me know how can I tolerate 200 ˚f for long time?

What is the model/year MBP that you have?

What applications are you using? Open Activity Monitor to ALL PROCESSES and set CPU to display values from high to low. When your MBP gets hot, post images of both temperatures and Activity Monitor.

Run an Apple Hardware Test:

http://support.apple.com/kb/ht1509

Ciao.