I very briefly skimmed the linked study[1] -- love that they actually linked to the study, especially love that the study is published openly, for free -- but there was one question&#x2F;concern that I didn&#x27;t see addressed.<p>They found that both groups (long and slow &amp; short and intense) were basically equivalent, especially compared to the control;  but they didn&#x27;t address potential safety concerns or risk of injuries.  Surely the group doing the short, intense workouts is at a substantially higher risk of injury.<p>My biggest question would be, what is the added risk, and given that is it still a good &quot;value proposition&quot; overall?<p>The sample size (total N = 25) is also kind of low.  Interesting nonetheless...<p>1 - <a href="http:&#x2F;&#x2F;journals.plos.org&#x2F;plosone&#x2F;article?id=10.1371&#x2F;journal.pone.0154075" rel="nofollow">http:&#x2F;&#x2F;journals.plos.org&#x2F;plosone&#x2F;article?id=10.1371&#x2F;journal....</a>