ответ:
dear,
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.
