The problem is that there is nothing at all suggesting what the 5mino app is. Is this about training to hold your breath for 5 minutes?
Impossible for the HN Crowd: Hold Breath for 1 Minute
11–12 of 12 posts
Re: Impossible for the HN Crowd: Hold Breath for 1 Minute
#12https://news.ycombinator.com/newsguidelines.html
Not sure what's with the sudden influx of clickbait crap on HN.