Good luck Johnny2 with your hunt. I am 59 and have been out there on a DIY hunt 2 years in a row. Like all the guys have said it will be tough physically especially if you are DIY on pub lands. Walking is certainly good exercise but let me tell you the altitude is a real killer. I live at 118' ASL and hunted the past 2 years at up to 10500 feet. It is hard to breath and even a small climb will leave you sucking air and not feeling like you are getting anything. It was all hiking and we had to pack out the elk we shot. I was hunting with a guy in his 40's and another in his early 50's both years. We hunted South Central Colorado and have taken 3 bulls and 2 cows during the 2 hunts. All of them had to be packed out in quarters on frames. If successful you just take your time and walk a short distance and rest a bit. Eventually you get them out and that is the way it goes. This is nothing like a deer hunt and you really do need to get checked out and given a pass by your doc. If you are lucky enough to get a hunt in, be prepared to see some really beautiful country and meet some real characters from the local scene. I wished I had taken up elk hunting years ago. IMO it is the most fun I have ever had while going for game. Good luck and I hope it happens for you. OBTW it is way better than moose hunting in Maine.