Depends if it is flab or loose skin. Loose skin will never recover, no matter how much you exercise.
Flabby arms with elastic skin - at least 3 months.
Flab(yuk)not revolting but room for improvement. not loose skin. Bit too old for boxercise.Have been moving rocks for a small rockery today. Every little helps.I suppose I should stop checking every day. Thanks for your suggestions.