Up Next
Back to Show
Horizons from PBS News
The science behind exercise and why it's good for our bodies
Season 2026
Episode 6
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.
Support Provided By
26:47
Why buying concert tickets is a nightmare for fans – and how to fix it
26:46
Two doctors offer new ideas to prevent gun violence in America
26:45
The hopes and risks of bringing humanoid robots into our homes
26:45
Exploring the science of keeping your mind sharp as you age
26:46
How a rare genetic mutation could unlock new ways to treat or prevent dementia
26:46
How much privacy is left in an age of surveillance?
26:46
The science of grief and how it can impact physical health
26:46
The lasting health toll of 9/11 on rescue workers and survivors
26:46
Technology is reshaping education. But is it helping students learn?
26:46
Why America faces a primary care shortage – and why it matters
26:49
The unsung heroes of American innovation and ingenuity