And I've read a lot of bullshitin this thread. 1 stair is not 1 foot. I think you guys have your visual measurement screwed up.
The only legitimate picture I've seen is sherbet's.
99% of the posts in this thread are total BS.
Pro BMXers at jams often pull out a limbo setup to do a crude messurement of how high they can hop. 42 inches is Seth Kimbrough's record, and that's f*cking high. I've seen more than a few 40+ claims in here with no backup. PB feet, and now we have PB inches.