The years we actually have are never the ones we would like to have. When we are small children, we are always in a hurry to grow up. Young women always want to be older, while after the 40th birthday everyone would like to be at least a few years younger. This is true for both women and men. Modern beautification methods can make the body look a little younger, but there is no way to change the years we carry in our cells. Biological age shows how old we really are. Her watch beats in the cells without being able to turn it back.

A study conducted in the Netherlands showed that an unhealthy lifestyle affects the average biological age to be up to 15 years higher than that of our parents and grandparents at the same age. This means that people in their 40s can be biologically up to 55 years old. There are various methods by which you can find out your biological age, so if you are curious, try to find out with the help of this test.

- Eyesight

Check your eyesight with a ruler and a newspaper. Place the long bone ruler near the apple tree, just below the eye, take a newspaper and slowly move away until the letters become blurry. Measure the closest distance at which you can clearly see the letters. If it is less than 15 centimeters then your biological age matches your age. For the distance from 16 to 30 centimeters, add one year and to all the additional 30 centimeters add one year plus.

- Skin

Lift the skin above the palm as much as you can, hold for half a minute and release. Using a stopwatch, measure how many seconds it will return to normal. If it is less than 1 second, subtract 3 years. If it takes two seconds, your biological and chronological ages match. But if it takes 3 to 4 seconds, add one year, in 5 to 10 seconds add 2 years, and in 10 to 30 seconds add 3 years.

- Lungs

Take a deep breath and all the air from your lungs, in one breath, exhale it into a balloon which you will then tie. Use a ruler to measure the width of the balloon. If you exhaled 0.5 liters of air, the width of the balloon will be from 7 to 9 centimeters, 1 liter refers to a width of 10 to 11 centimeters, while 1.5 liters is 12 to 13 centimeters. 2 to 3 liters of air expand the balloon from 14 to 16 centimeters, and with the next 2 liters another 6 centimeters of width are added. If your result is less than 1 liter of air, add 5 years, and if there are 1.5 liters in the balloon, add 3 years. For 2 to 3 liters are added after 1 year, while for 4 to 5 liters are subtracted 3 years.

- Muscles

Stand up straight, then lift one leg and bend it at the knee. Place your hands on your hips or spread them out and close your eyes. Count how many seconds you will take to maintain balance. If you lasted one minute, subtract 4 years from your age, and if you managed to hold out for about 30 seconds, subtract 2 years from your age. But if you could not last even 5 seconds, add another 3 years.

- Counting

Take a stopwatch and count backwards of 100 by 7 numbers. Under 40s should reach 2 in a maximum of 20 seconds, while those in their 40s and 60s should finish counting in 40 seconds. For results faster than expected, subtract 2 years from your age, and for slower completion, add 2 years.

- Circumference

Measure the circumference of the widest part of your hips and waist. The perfect measure of the waist is 70% of the hip circumference. If you have received such a result, subtract one year. For a waist circumference that is 80 to 90 percent of the hips, add 3 years. If their dimensions are the same or the waist is wider than the hips, add 5 years to your age.

- Gymnastics

Stand up straight, bend your knees, lean forward and try to reach the floor with your palms. If you have fully touched the floor, your biological age is 20 to 30 years, but if you only touch with your fingers, then you are 40 years old. At 50, you can no longer reach beyond the lower leg, while if you are on your knees, your biological age is 60.

- Pulse

Measure your heart rate and then do 30 squats quickly. Measure your heart rate again and calculate the difference. If you are in your 20s, your heart rate should increase from 0 to 10 units, if you are in your 30s – from 10 to 20 units, in your 40s from 20 to 30, and over the age of 50 it increases from 30 to 40 units.