you during first days of bct abt wysocki added with the toughening stage of this toughening period of omfort lasts usually only a week or two. then you'll enter thedual improvement stage of conditioning as the soreness disappears and your inse at first, your improvement may be dramatically rapid as you find yourself accomplishing feats with ease that were beyond ago. the obstacle course helps to master the acts of running, jumping, vaulting, climbing and other valuable physical skills while at the same time providing you with a competitive challenge. you will usually be allowed to go at your own speed, matching yourself against the course and not the clockgo. run in the toprenuous grass dri. the exercises are not done in the best speed of the individual. but don't try loafing. you may wonder sometimes just when you achieve a certain level performance wh seem to get rougher and the rest shorter. that's the overload principle in operation. if you are to progress and bercise, it must extend you beyond your previous limits. that's how you guerrilla. exercises are another example of rigoro