Strings Tighting and Streaching

I always hear about changing strings as soon as one gets a new guitar. I often thought that maybe, by doing that that good strings were being wasted.

On my new guitar the tag said "This instrument is strung with SAVAREZ strings". Since this is a good brand of strings I have decided to hold off on changing just yet. Since I tuned up to E-e I have to tighten up the strings two or three times a day like one does with a new set. And these strings look new.

At other times with my guitars tuned in drop 2 or 3, when I pick up the guitar the strings have always seemed to have tightened.

What causes this? What is your experience with strings acting like this? Does the weather cause this? I live in a humid and hot country.

By all means leave those strings on if you like the sound. If I get an instrument and I think a string change will improve sound or playability then I might change them with in the first couple days. But if I like them I keep them on.

Strings have a memory, if you tune down from a certain pitch they will want to go back to that so retuning is neccassary. Living in a hot humid country will cause the wood to swell and expand which puts different tension on the strings. I live in Canada and as we go from cold to hot all my instruments need constant returning. Same when it goes fromhot to cold. This is all very normal.