26:46
Horizons from PBS News
Can AI companionship cure loneliness – or deepen it?
Can AI companionship cure loneliness – or deepen it?
The science behind exercise and why it's good for our bodies
Dive into the world of science, health, technology, and environmental issues making headlines each week, hosted by PBS News Hour’s William Brangham, with in-depth discussions featuring leading experts and professionals.
The science behind exercise and why it's good for our bodies
Season 2026 Episode 6 | 26m 46s | CC
This will come as a surprise to no one, but exercise is really good for us. But why it works and how it works are far less understood. Horizons moderator William Brangham explores that with Stanford University’s Euan Ashley. He's a professor of genomics and cardiovascular medicine and is part of a team trying to understand, at the very molecular level, how exercise changes our bodies, and why.
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