Venerable Ajan Cha once explained “If the body could speak, it would be telling us day long ‘you are not my owner you know’. Actually it is telling it to us all the time, but in Dhamma language. Therefore we are unable to understand it.”
It means the body follows its own way. Sickness and Old age cannot be avoided. We can temporally take care of it and beautify it for a short time. Therefore we should not ‘worry much’ about our external appearance. Instead we should try hard to eradicate evil, cultivate god and purify our mind.
That is how I understand the teaching .What is your views?