Crawling can be easily dismissed because it looks so simple and for something that simple how is it useful in your fitness training programme. That is my thought years ago
Do you use the kettlebells? Is it working well enough for you and giving you the results you want?
Unless you have been living under a rock, it is pretty well-known
WHY KETTLEBELL SWINGS?
Kettlebell swing is an exercise that many people failed to appreciate its simplicity in getting the job done. Top strength and endurance athletes and martial art artist use