Incorperation of Sled Dragging: Why?
1) As your GPP increases, so can your workload. You'll be able to tolerate more volume, and also can recover much faster between sets which will decrease the need for long rest times.
2) It allows for a decrease in recovery time through the process of active recovery. The faster you recover, the better the results, especially dealing with a full four day approach (preferred).
3) Prevents injuries before they happen (prehab).
4) It increases motor skill through improved efficiency of movement patterns. So what does pulling the sled mimick?
5) Intervals with the sled are awesome for fat loss.
6) Excellent for shoulder rehab. It's not just for lower body either. Buy some straps or rig your rope like I did and you could work every muscle you have. Examples: face pulls, lateral raise, rows, extensions, curls, ect.
7) Can't make it to the gym for a lower session? No problem.. Use it as a maximal effort. Just keep loading more and more weight every trip until you cannot do anymore. If you're not dead yet, take the weight off and do some walking pullthroughs. Options really are limitless.