A personal trainer shares her experience performing 70 walking plank push-ups every day for one week in this push-up ...

After she signed up to attempt to break the world record for the longest plank, Wilde started training by doing hundreds of push-ups a day — and then decided that would be her next challenge.

The Plank Walk on China's Mount Hua is considered by many to be one of the most dangerous hikes in the world. Hikers walk across a few planks of wood bolted into the side of a 7,000-foot peak to ...