Incorporating a bouldering 4x4 workout into your routine once a week is a great way to add structure to your regular climbing workout. They’re also a great way to build power endurance, which will help you power up bouldering problems with bigger moves and climb up long routes without tiring as easily. Best of all, the workout is pretty simple--you pick 4 climbs and climb each climb 4 times. Consider each problem you pick like a set that you climb four times. Then you’ll rest for 5 minutes and then do the next problem/set 4 times and so on through the rest of the workout. One of our staff members walks you through how to do a 4x4 bouldering workout.