> Anything that gets your heart rate somewhere between 110 and 140 beats per minute is enough. There's a related point that people often get really wrong when

> Anything that gets your heart rate somewhere between 110 and 140 beats per minute is enough. There's a related point that people often get really wrong when they take up distance running: you can (and should!) actually run within that easy heart rate range. It may seem unbearably slow at first, but that just means you aren't ready yet to go faster. When the goal is "faster pace at low effort", it's tempting to think you can train at faster pace + high effort and wait for the effort to fall. But that doesn't reliably work. You're better off training at low pace + low effort and wait for the pace to rise, holding low effort constant. Mostly this is because you (definitely) reduce the risk of getting hurt and (probably) don't waste a bunch of energy training the wrong metabolic pathways.