Exercise

The Exercise is very important for everyone because it helps us to keep fit and helps us to have a healthy life.
For these reasons, I like to exercise and i go jogging every day around for about 30 minutes. and I also like swimming, too. 

Nice job! Just remember that usually singular nouns don't need "the" unless they are describing something specific (if you said "the exercise of jogging" you would be naming a specific exercise, but just exercise isn't specific). Also, I wouldn't use infinitives after a verb ("it helps to keep" would just be "it helps keep"); it might not be incorrect to use infinitives but I don't hear it often. Otherwise, well done. :)