It is of human nature to work with your body.

The core of taking care of yourself is that you work where you should work, be active with your body, and think with your brain. It would have harmful influence upon your body if you do not work where you should, if you are fond of taking nap or oversleep and stay out of the activities with others. That's the act of anti aging.

It makes you ill for not circulating your inner power throughout your body and works to lose your appetite if you are not active as sitting all day long.  This is especially true as your aging proceeds.  It does not do any good if you sleep too much. It is necessary to take a walk after every meal. It will revitalize your inner power and hasten the digestion if you walk several hundreds steps after the meal.

You should not sleep soon after your meal.

You take good care of your parents and serve to your lord, get up early in the morning and go to sleep late at night. People should know the thing that is expected to them and pursue it with the way what you are expected.

The samurai should become accustomed to the reading as well as writing and learn  to behave courteously, shoot the arrows, ride on horse to be skillful in arms. Those action work your body nicely.

Other than Samurai should be loyal to the lord and make effort day and night to accomplish what they are meant to accomplish. It is common that women rather stay in the home and are apt to having sick easily. They should make effort to work their body as well.

++++++++
It had been common during the age of feudalism that women had been seen as the mere tool to make birth and had been common throughout the world. The worst thing is that there are men who think same way in this modern age when we send human to the moon. You should realize that  men and women are made of same material and there is just a little difference biologically.

You should not use your aging as the excuse of not doing something. It won't do any good to your anti aging activity.