It may be the mark of the beast, but for those who are trying to get fit, “6-6-6” is also a subtle shortcut to beast mode. The viral 6-6-6 walking challenge is a flexible daily fitness routine that ...
75 Hard: What happened when I tried the internet's toughest fitness challenge? - This brutal 11-week fitness challenge has taken over the internet. But critics have called it ‘ridiculous’, and ...