Here is an eight minute HIIT (high intensity interval workout for you). I watch these workouts online , mostly demonstrated by ripped young men. I think it is important for you to know that you can do this as well. It might not be as pretty at 60 something but I get it down and reap the benefits. I hope I inspire you to give it a try. (I messed up the squat jumps the first time around, just move for those 30 seconds, try jumping jacks:)
If you need help modifying please leave me a comment below.