Alright, this is what I want you to do. I want you to put on a heavy shirt, long pants, combat boots, fill a pack with 50 lbs. of rocks, wear a web belt with two full canteens of water, carry 200 rounds of 308 ammunition, wear a helmet, at all times and run 15 miles without stopping up and down uneven ground.
Then, let me know how you feel and what is your time.
Have a happy fourth,
Ed