Adapted from Greg Glassman’s post to the CrossFit Message Board, Dec. 12, 2008.

Here’s what we know about CrossFit, general physical preparedness (GPP), sport training and athletic development:

  • GPP is the most underdeveloped and neglected aspect of athletic training, especially in elite athletes.
  • CrossFit produces an unmatched GPP in novice, intermediate and advanced athletes regardless of their prior training and sport.
  • Every athlete we’ve worked with, from Olympic medalists to UFC legends, has some glaring chink in his/her GPP, and it takes at most two hours, two sessions, on average, to find these chinks.
  • Fixing these chinks, these deficiencies, has immediate benefit within your sport and very often in ways not quite obvious mechanically and perhaps metabolically. For instance, more pull-ups make for better skiing and skiers. Upper-body pushing movements make for better rowing and rowers. Anaerobic training is a boon to endurance athletes.
  • There’s greater margin for improving performance in elite athletes, where the margins of victory are very tight, in improving GPP with CrossFit than can be garnered through additional sport-specific training.
  • “CrossFit produces a ‘ready state’ from which more advanced or sport specific training becomes very efficient.” —Mark Twight
  • CrossFit will for many sports reduce the total training volume, reduce training injuries, and allow more time for vital sport-specific skills and drills.
  • CrossFit is more fun and seems more athletic to experienced athletes than does traditional GPP.
  • CrossFit has athletes improving their fitness for years beyond, to levels significantly beyond traditional GPP.
  • Sport training and physiology are not so well understood that highly specialized strength and conditioning routines are optimally effective.