Very interesting article. Long read, but well worth it.
Lthlete isn't in the iPhone app store. Bioforce hrv's app is out but it says needs external hardware, see website for details and then the website says preorder only. So any recommendations for an iPhone user or do we need to just wait.
Also is a 7-10 day recovery period really necessary to do a baseline. I was thinking of a 4-5 day at most. I generally feel like a pos if I don't do any physical activity for only 2 days.
Thanks