 With now being the time that many kids are signing up to play football in the fall, it's time for parents and children to decide if it's safe. We're joined by Dr. Tom Mayer, medical director for the NFL Players Association. Doctor, the kids first and foremost have to love it. When our kids were younger, they're now young men, but when they were younger, I always used to say the same thing to them when they went to school every day, which is,