My best and most often exercise is the "lever, pull, recline".
I tried running, but I kept spilling my wine...
Running is the best exercise for every age of person.
Depends on what one's goals are.
I am looking at increasing metabolism and gaining muscle while dropping body fat . . .
For me it is 35-40 minutes on the elliptical and then an 1- 1 1/2 hours of free weights targeting muscle groups . . . So far I have dropped about 25 pounds of fat and increased muscle tone and mass which increases my metabolism.