re: Today's Gym Rant

quote:

---

You must not lift heavy objects

---

quote:

---

They found that more force was created when exhaling than just squeezing alone. But the discovery came when comparing the amount of force generated when the subjects yelled (or grunted) and squeezed simultaneously. "[What] we found was that there was actually an additional 10 percent increase in force when yelling, which was really cool for us," says Rodolico. "So, comparatively speaking, the exhalation was more than the passive, and the screaming was more than both. And I'm speaking significantly more.

But why?

Sinclairs takes a stab at an explanation: "We've actually thought a lot about that, and one of our hypotheses is that yelling may activate the autonomic nervous system, which is the nervous system that controls the fight or flight response — that feeling you get when you become startled or scared, that adrenaline rush that a lot of people speak of. And that may help the muscle contractions be more complete and more forceful."

---