I think freedumb2003 is in error by conflating "sufficient" with "necessary"...
Cheers!
Well, that’s just my opinion - and my experience as well. Diet + exercise, (+no alcohol for me). Seems to me he’s excluding pills, bariatric surgery, transcendental meditation, cocaine, bulimia, smoking, whatever - so not “conflating” in the usual sense of the word. Your mileage may vary.