If I call my brother to check on him, he doesn't call me back. But if I text him about sports he'll call right away so why is that?

He rarely, if ever, calls just to see how you are and if you call to check on him it could be days or longer before you hear back from him. But text him something quick about your favorite sport and he's on the phone to you in a flash. Coincidence? Nope, not at all.