5miles a day walking.. well geez man, you are definitely traveling distance.. I hear ya.. I have the same problem.. I can't GAIN a rapid amount of weight because of it.. I am not losing but more or less staying stagnant during cruising... (which I guess isn't a bad thing) I mean hell.. 2 years ago I was 305lbs 40% BF.. It's amazing what hard work, dedication, proper nutrition, correct supplementation. .. AND !! A Job that has you on your feet the whole time will do...
I was debating the same thing on what to do... and it's funny.. I was thinking the same exact thing.. A-BOMBS !!