The answer is yes.
It seems that the actions needed to show strength weren’t that different from today’s deeds.
Daidoji Yuzan was a Samurai who lived until the ripe old age of 92. Born in 1639, he travelled around Japan and, like many people today, found that the young Samurai of his day lacked the strength of constitution that the warrior class was famous for. He felt they needed direction in living. To correct this, he started a series of essays that still exists today. His writing formed the backbone of actions that warriors looked to for guidance in a life of service that ultimately could end in their own death in battle.
His advice includes:
- Protect your health fully
- Be moderate in desires for food and drink.
- Give wide berth to matters of sex (he called sex the primary deluder of men)
- Respect your parents.
- Rise early.
- Speak little of prowess in ability.
- Be prudent in finances and be disciplined in savings.
- Take care of clothing and possessions.
- Keep in mind the desire to perform at least once in life a great meritorious deed.
So it seems your training starts now, whilst reading this.