Topic 1.
I think,that healthy eating and exercise are both good for your health.Eating a healthy diet can solve many health problems, and the sooner you start sticking to a healthy diet, the better.Regular physical activity is the basis of a correct lifestyle and a guarantee of the absence of health problems in old age. People who do not neglect sports are less sick, because their immunity fights more effectively against viruses and pathogens of various diseases, are rarely overweight and better cope with stress and everyday problems. During sports, the human body produces endorphins, which has a positive effect on the cardiovascular and nervous systems.
1. I think, it's 50\50 situation. You can be a wise and very kind persone but your speech may sound awful, and people think that your another fool and prefer not listen you. But that's not true. It's the one side of situation.
2. If we look at the second quotation, we find another side. Sometimes, your speech can tell about you and your past more than it needs. So, we must be careful and speak correctly, and also clearly.
3. The third quotation is the hard one. I inetrpreted it as the less person talks about himself the less people know about him or his personal life.