1min high-intensity exercise 3x a week improves fitness as much as 3x aerobics (2016)
It's 8 minutes, not one minute<p>The people in the study were out of shape to start with<p>The improved measures were insulin sensitivity index, peak oxygen uptake, and "skeletal muscle mitochondrial content"<p>No change in body mass<p>In conclusion, if you're out of shape, you can improve a limited number of fitness measures just as much doing 3x8 minutes of higher intensity exercise as much 3×45m less intense exercise over 12 weeks