Ever wondered what it’s like to do the Bear Grylls workout? On a hot morning in London, we tried it – and it was very, very hard.

Treadbands take care of a common problem that we’ve all struggled with. You’re on a long hike on a hot summer day and you’re sweaty. Your regular headband is just ok because you have to keep retying it. It doesn’t want to stay in place but hey, it’s all you have so you just deal [...]