I am in my 60s and have heard that TRT is helpful. I am not a candidate despite having a very low testosterone level so I can't give any personal experience with it but have heard good things from friends and co-workers.
Otherwise, I do vary my workouts in that I train either very light with high sets and reps or (relatively) heavy with low sets/reps and sometimes in between. After several decades of training, there really is nothing new under the sun. I sometimes do H.I.T. but will again vary it by doing it in the traditional way with heavy weights and low reps/sets or the higher (still to failure) reps with lighter weight )but still not too many sets. Maybe six total per body part. It is no less intense with light weights and high reps, or at least that is how it is for me. I usually train no more than 4 times per week but have done six days a week for a couple of weeks at a time.
I used to do the old "giant sets" routine for up to 25 or 30 total sets per body part but the last few years I have backed off on that as it wears me out big time. The thing to come to grips with is that our ego is quite often still the biggest thing on us. It bothers me to see myself age and it is definitely a crime that we grow old.
I am certain that Coach knows more than I do but I do know what I use for myself and hope this proves helpful to you.
I’m 55 turning 56 in August. This is some pretty solid advice. A couple of years ago I switched back to a more bodybuilding type of training because I blew both shoulders out getting ready for a IPF meet. Main thing is of course maintaining lean body mass. More lean body mass the efficient the body will run.
I’m a HUGE advocate of HRT even at more than prescribed (but not much more). Limit your time in under the sun but just enough to stay healthy.
20-30min of cardio EOD or Everyday
Bodybuilding is a lifetime lifestyle if done right