Trainer and treadmill guru David Siik demonstrates "the skip," a more engaging alternative to an outdoor run. Tamara Beckwith/NY Post See more of our coverage in your search results. Add The New York ...
[youtube width=”537″]http://www.youtube.com/watch?v=BNw4AXQxzQc[/youtube] We’ve seen cardboard bikes, surfboards and a huge amount of cardboard furniture, but ...