Yeah I'm in my 30s and I hear this about this sort of thing all the time from other people my age, but the only time I experience body pain myself is if I injure part of my body. But then I do my due diligence to let it heal and I'm fine after. I'm not overly fit compared to other people my age, I don't do yoga or anything, I just like, lift with my legs instead of my back. For some inexplicable reason a lot of people I know don't follow that age old advice despite moaning up down and all around about their chronic back pain.