It really is just a number my grampa still working and he’s 76! and my Boxing coach is 67 and he would kick my ass up and down the street. 60 is just a number still got 40 more years to go before your old lol!@AFONE Bro, 60 is just a number! Sounds like you've always been dedicated to fitness. SARMs could be worth exploring, but dialing in your sleep and stress will make a huge difference too. 5-6 hours isn't ideal, especially when you're training hard.