Couple of links. Both of these have been passed around before, but on the off chance you didn’t see them, here they are again.
I cannot stress this enough. A recent meatspace conversation with an old friend reminded me that if you are over 40, and a typical American, there is no way you will be able to hump all that tacticool gear you bought up & down the rolling hills of where you live in middle America without dropping dead.
Get your ass in shape. That is all.