I tend to think of baseball long toss, looser = longer. Also as a former D1 swimmer I tried to remain as loose as possible to elongate my distance per stroke. When you watch swimmers/runners getting ready before the start they are all loosening up as much possible before the race.
Have you ever noticed swimmers compulsively shaking their muscles and fidgeting behind the blocks before a race? From Michael Phelps iconic arm swings to the, “dancing queen,” Sierra Schmidt, at last summers Olympic Trials, it turns out there is more to moving and staying loose, than just nervous en
www.traindaly.com
Athleticism is a balance of tension and relaxation. Some of the best practices in sports performance come from research, and training anecdotes, developed in Eastern Block athletics. "Fast and loose" has long been a dynamic relaxation practice observed in the routines of some of the worlds best athletes, from kettlebell athletes to swimmers.