My body is 37, but feels like 67 since I treated it like an amusement park for the first 30 years. My philosiohy is you are only as old as you act, so I am 21.
My wife just went to HD and got me some 1/2" oak boards and some 3/8 pine boards. She doesnt know that much about wood, but she made sure it had no cupping or warpage and she also checked for splits.