DiscoverScience on Player FMIf your idea of outside time involves heart-rate zones and split times, not just playlists and enjoying the view, open-ear headphones are basically a cheat code. - Popular Science from NFB-NEWSLINE.
If your idea of outside time involves heart-rate zones and split times, not just playlists and enjoying the view, open-ear headphones are basically a cheat code. - Popular Science from NFB-NEWSLINE.

If your idea of outside time involves heart-rate zones and split times, not just playlists and enjoying the view, open-ear headphones are basically a cheat code. - Popular Science from NFB-NEWSLINE.

Update: 2025-11-28
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If your idea of outside time involves heart-rate zones and split times, not just playlists and enjoying the view, open-ear headphones are basically a cheat code.
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If your idea of outside time involves heart-rate zones and split times, not just playlists and enjoying the view, open-ear headphones are basically a cheat code. - Popular Science from NFB-NEWSLINE.

If your idea of outside time involves heart-rate zones and split times, not just playlists and enjoying the view, open-ear headphones are basically a cheat code. - Popular Science from NFB-NEWSLINE.