These both seem like a really big deal: > The timing of when they actually grunt helps them with the rhythm of how they're hitting and how they're pacing thing

These both seem like a really big deal: > The timing of when they actually grunt helps them with the rhythm of how they're hitting and how they're pacing things > If you're looking at reflexes in the legs and you ask someone to clench their jaw, then believe it or not, the reflexes in their legs get brisker, that's a well-known problem called re-enforcement