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Dear Paul,

Thank you for your letter! I'm glad to hear that you've passed your driving test! Congratulations!

I'm sorry I haven't written for such a long time. I've been really busy with my new project. By the way, thank you for your brilliant idea. I really had the best presentation last time. I really appreciated your advice.

As for your question, I think all you have to do is just regular exercises. Don't be lazy and try to find at least 20-30 minutes for your health every day. There is a rule of 30 minutes a day: if you do something at least 30 minutes a day you will have a result at the end of the week. For example, if you read 50 pages during this time, at the end of the week you'll have total of about 350 pages. If we say that we don't have enough time for it (as we usually do) we have 0 result at the end of the week. Besides, they say that it takes 21 days to form a new habit. So all you have to do is to take the bull by the horns and try it for just 3 weeks.

Unfortunately, I need to come back to my project. I hope my advice was helpful.

Hope to hear from you soon.

Take care,

Vitaly.

To my mind, nowadays teenagers are not as healthy as 50 years ago. It is because of the fast-food, the pernicious habits etc. Lots of teenagers computer addicted and don't walking and doing sports. Nowadays many young people are overweight or suffer from different diseases as a result of wrong food and lifestyle.
Firstly, teens today eat lots of harmful food, with a lot of carbohydrates and fats. Many kids and teens prefer McDonalds instead of home meal. Actually, teens usually ignore their parents' advice to eat more fruits, vegetables and dairy products. Secondly, nowadays teenagers often smoke, drink alcohol and take drugs. It breaks down their health, this is compounded by polluted water and genetically modified food. Fifty years ago the situation on our planet was better, there were not so much junk food in stores and teens preferred to spend time on the streets.
In conclusion I would like to say we have to pay more attention to our health. I suppose if we will change our lifestyle, we'll be healthy.