Aziz Ziritat, 36, and his friend Samuel Harris, 35, both from London , were hiking in the Dolomites in northern Italy but they had not been heard from since 2.20pm on New Year's Day.
Rucking – wearing a weighted backpack while you walk – could be one of the few exceptions. So I decided to give it a go, committing to walking 10,000 steps a day for a week with a weight on my back.