Communication skills: aside from excellent maths skills, studying business also entails communication skills. You will gain credit points by writing papers and giving presentations.
Marketing 101 (knowing your audience) is part of the core contents of business studies. This becomes important when students develop products - it is important to know your audience and define target groups.
Entrepreneurship: most bachelor and master programs in business studies ask students to do an internship. This does not only provide you with a first impression of the labour market related to your studies but also makes it possible to forge new relationships and widen your personal network of business contacts for the time after graduation.