Opportunity Cost - Should we focus more on range specific training?

When you're training something it's at the cost of training something else.

Identifying where training dollars should be spent is at the heart of athletic performance.

What can we do less of without a loss in performance?

What is positively impacting performance most?

John Danaher discusses this in his podcast with Lex Friedman when talking about skills.

One of the areas that is most relevant to ATG is with RANGE SELECTION...

Does focussing more on the key ranges being developed create more efficient gains for athletes?

Should we be training "full range of motion" or focussing more / most of our attention on developing the specific range we need to develop?