The U.S. is a very welcoming place for Indian students. Each U.S. university has an international student services office with trained counselors available to answer your questions and guide you through the process of adaption to U.S. university life. The international student services office also organizes a variety of regularly schedule events for international students. Many U.S. campuses also have Indian student associations, which also organize events on a regular basis.
Having good lifestyle is important for professional life. When you have good Lifestyle it makes good impression on anyone. Professional people from industries can meet you anywhere any time, if you dress well, be tidy and look sharp, it makes big difference on your career. May be the person who sees you randomly sometime might offer you a lead or job. You do not need to wear anything fancy., even if you are in decent jeans and t-shirt with tidy look, it still gives good impression. Having a good lifestyle means, wearing decent clothes, keeping yourself clean, grooming, using deodorant, cologne, etc. You do not want to look like a caveman, who is trying to save money by avoiding a haircut and shaving.