I don’t follow 5x5, I recommend startingstrength.com. I use three sets of five following a good warmup. Look at The Barbell Prescription book for more details

I don’t follow 5x5, I recommend startingstrength.com. I use three sets of five following a good warmup. Look at The Barbell Prescription book for more details - it’s about strength training after 40. Good form is important, and a trained coach can help with that.