i'm 73, ride a 16 m-8000....y-pipe, tki drive, ti can, just put a 174 on my previous 162....looking forward to another season....i work out pretty hard with weights and stair master, rowing, bike and my own routine using hand dumb-bells....the group i rode with for years have all given up for various reasons...i still go to the same places, hook up with different groups in the parking lot, don't mention my age and with a helmet and gear on, they won't know until i've already established my ability to ride...i also frequently ride alone, but am careful about where i go...i carry a "spot" and a satellite phone, have a good survival pack with storm parka, also lots of outdoor experience with several survival schools, i backpack, hunt elk (took a very nice 6 point), packed him out by myself....not giving up or in to age just yet...