Go ahead no problem, I sometimes Pred diferent subjects and then I can activate it with no problem. Think like in a magazine there are a lot of different subjects in there.
I donīt kwon if is the same with you, but when I PRed I have like that hunches that they are small feelings, telling me to dip in there.
And when I donīt PRed I donīt have that, That was the only way that i have to noticed the hunches.