If they have a low self esteem it could make the mood bad and spread to the other person eventually, it can also lead to depression and high self esteem brings positive vibes to everyone, but you don't want too much of it or you could seem stuck-up, if someone tries complementing your dress don't go oh well I'm too fat in it, or yeah it looks so good on me, no one else it would look good on. Just say thanks! And give yourself complements if your feeling down :)
It should reduce nausea because hyperemesis is severe vomiting during pregnancy.
This is a very tricky question as you can get a lot of answers that will be partially correct.
The best answer in my oppinion is between the range of 7 minutes to around 15 minutes.
The reason why saying just one value isn'the best idea is because, if we have two groups of people, the average for the first group might be 7 minutes, and the average for the second group might be 11 minutes. So it's hard to say the average is 7 minutes. It's better presented in an interval where we can find this number :)
