We all know what it feels like to drop the hammer and go as fast as you can, as hard as you can, as long as you can. The open tends to bring this attitude out with us, so it only makes sense to every once and awhile, train that way. As we get more fit, the boundaries of fitness are expanded, therefore its important to retest our limit occasionally to reestablish our level of fitness, which will in turn help us set realistic and challenging paces for future workouts. There are a few different ways to do this, one of which is interval training at a specific pace that is just slightly outside of what you know you can do. However, my favorite way to wreck myself is to pick a movement that i am good at, and put around40% of my one rep max, and do max consecutive sets with the one goal of partying until i puke( i don't actually puke, but i go until i cannot go anymore). The last thing i like to do is to take a very simple movement that takes little technique, and burn it out, in my opinion the best one for this, is the sled push. Load a light weight onto a sled, and push as fast and as hard as you can as long as you can. I've done this many times, and this will definitely establish your limit. So, drop the hammer and find your true limit.
Workout: Sled push (90#/45#) 20 lengths for time ( 1 length = 25 meters)