The first weeks of a new exercise routine can be hard — your muscles tremble, your lungs burn, your heart races.
But after a month or two, it gets easier: You’re running faster and longer, or lifting weights with more ease.
You’ve hit a workout plateau.
After just a few training sessions, the brain can become more skilled at telling muscles to move.
For example: “The heart gets stronger and better at pumping blood to the muscles,” said Jeff Horowitz, an exercise physiologist at the University of Michigan.
Persons:
Chris Perrin, “, ”, Jeff Horowitz
Organizations:
Washington , D.C, University of Michigan
Locations:
Washington ,