New year, new wellness challenges? Here's what the viral 75 Hard challenge is all about, as well as pros and cons.

But I’m glad I gave it a go. Sometimes you need a ludicrously difficult challenge to jolt you back on track and 75 Hard is certainly that. To receive the best stories in your inbox every day ...

75 Hard is a workout challenge that does not allow for any ‘cheat days’. Is it perfect for kickstarting a new regime or does it go too far? Here is what fitness experts have to say 75 Hard ...