My set up is macbook air mid 13 with i7 processor and 8GB of ram running OS X Yosemite. Which is plenty for my use, at least it has been. I usually have no more than 3 apps running as notes, reminders and safari. I also use statsbar to watch the performance and the usual is 1/3gb of ram free. The problem I started noticing is in the past week the machine has started overheating as I can feel it by touching the laptop and hearing the fan, which only used to happen when I tried to turn on all I could to see if the machine would handle it.
I supposed some would say that it also may depend on the amount of stuff I have open in safari as neither notes nor reminders use up the cpu that makes it overheat. I usually have up to 5 tabs open: youtube, couple of news websites and a couple of wiki tabs. Which the machine used to handle with no problems at all.
So my main question is how come the machine is going crazy and what can I do to prevent it?