Stand on one leg, bend the other leg backward from the knee to the hip, put your hands on the hip, and record the time to keep balance.

"calculation method"

Can keep balance 1 min or more: minus 4 years.

Can keep balance for 30 seconds to 1 min: minus 2 years.

Can keep balance in less than 30 seconds: add 3 years.

Skin reaction test

2

Put your hand flat on the table, squeeze the back of your hand 1 min, and observe the time when the skin red mark fades.

"calculation method"

Fading time is less than 1 sec: minus 3 years.

Fading time 1 to 2 seconds: neither add nor subtract.

Fading time is 3 to 4 seconds: plus 1 year.

Fading time is 5 to 10 second: plus 2 years.

Decay time 1 1 sec or more: add 3 years.

Fading time is less than 1 sec: minus 3 years.

Fading time 1 to 2 seconds: neither add nor subtract.

Fading time is 3 to 4 seconds: plus 1 year.

Fading time is 5 to 10 second: plus 2 years.

Decay time 1 1 sec or more: add 3 years.