welcome back to the most news in the morning. some developing news to tell you about just in to cnn. police in london saying they have arrested five men this morning. there are reports they're being held on suspicion of preparing a terrorist attack. possibly linked to the ongoing state visit of pope benedict. this is according to scotland yard. five men arrested friday morning in london by counterterrorism officers on suspicion of terrorism. we have calls out. we'll get the latest on this developing story and bring it to you in just a couple of minutes. drew? all right. there's new evidence that exercise can boost a child's brain function. actually make them score higher on a test. joining us from irbana, illinois, professor of i can needology at the university of illinois. he is also authored a number of studies on how exercise can impact children's brains.