enjoy fresh chicken better and have better luck with it, you may just be lucky in that you're not getting chicken with woody breast in the first place. If you're buying local farmers' chickens, you may be getting heritage chickens, smaller and slower growth.
It is caused by breeding chicken with larger breasts and faster growth. They started this program in about 2001 or so, but it's gotten out of hand now, and the general public FINALLY noticed. I've read lots of older posts about people cooking dry or tough breasts and thinking they were overcooking their chicken, so I'm thinking this went on for YEARS before people stopped blaming themselves. It has only been a couple of years that the poultry industry was faced with having to deal with it because of severely declining poultry sales. Thank goodness for the internet where people can gather and spread information!
Matter of fact, the last three years that I cooked turkeys for Christmas were that way. And I haven't cooked one since 2012, so that would push it back to at least 2010 for me. But I quit chicken breasts before that. When I first noticed it, nobody else was complaining. I just thought it might be the brands we were getting around here. But now I know it's actually world-wide.