This is the best answer. Keep all aspects of your appearance and personal life in order, so that when you conducting business, there is nothing else for your employees, investors, and customers to worry about.
Keep in mind though that in certain cases (not majority), being obese is quite different than bad odor, bad clothes etc. Reason being that in those cases, it is a disorder (I personally know someone with this problem) while bad odor, bad clothes etc. are still something that can be controlled and resolved.
