Walking - The secret of kung fu masters

A Hong Kong movie director,
talked about his wife's cancer, which was cured 95% by Chi Kung.
The exercise he noted only included walking from 5:30am in the morning
for one and a half hours.

This is my third week walking.
I had diarrhea the second week, and it drained my energy.
I am also walking during lunch.

At least 1 hour in the morning, at least 45 minutes at lunch.
During the morning walking, I am including the "hugging tree" hand posture.
During lunch walking, I am punching.

migraine headache and Tai Chi

I haven't had a headache for months.
Tai Chi solved it.
There was a few nights when I went to sleep very late,
past 1 am.
I was worried about headaches.
It was acceptable.
Had to perform Tai Chi to remove it.

Hugging Tree

Did I improve ? I don't know.
But a senior student at the Wing Chun school I am attending
felt my arms are heavy, and a bubble behind the arms.
That's the Hugging tree stance.