Breaking concrete blocks - easier than you think

Crunching some quick numbers, I compute that it would, on average, take about 125-175lbs of static force to break one of these blocks in this manner. Without any other reference, this may sound like an impressive feet, but consider that this is typically less than the athlete's own weight; if they simply stepped onto the block it would potentially snap. Heavyweight boxers have been know to hit with as much as 1,000lbs of force, in a more difficult, horizontal direction, while martial artists often go so far as to employ a jump prior to striking the blocks. The biggest challenge for the average martial arts athlete to break a single concrete block is psychological, if they mentally commit and strike with a full force blow and have good follow through after impact, they'll easily break the block.

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