Heat shock proteins are really a response to abnormal protein folding (generally speaking) and are found upregulated in a number of stress response scenarios; including cold, heat, and oxidative stress
Re oxidative stress, can you give practical examples of how this is achieved for a person, what physical action creates it? https://en.m.wikipedia.org/wiki/Oxidative_stress suggests it's associated with lots of great harms - brain diseases, heart disease, etc.. How does that pair with longevity in practice?
It doesn't. It pairs with shock proteins.