Best exercaise to maintain haelth

Bast exercise to maintain haelth, and with it all the necessary energy for maintaining muscle strength:

For a long time I believed that my problem was simply "too much work," as defined by most fitness writers. This theory failed me in several ways. First off – when you're
 building your physical conditioning

 (i) more efficiently than any other form of training or

 (ii), there's not really anything special about doing this type but harder stuff because if someone can't get enough reps on his bench press at 6′ 3″ he won(tm). Second- no matter how many years ago one tried stretching an anterior pelvic tilt from shoulder height while sitting 90 degrees outstretche