pThis video, entitled ‘Man vs Stairs’, was filmed back in 2010 but only surfaced this week. Uploader Liam was so impressed by his friend’s trick of sliding down the stairs on his chest that he requested an encore. Unfortunately, things didn’t go to plan for Chris second time around as he flipped head over heels and managed to concuss himself. There was no lasting damage however, as our hero competed in a BMX competition the very next day.