Study / Is it possible to study, work and do sports training in Poland? [7]

hi frens im from india and wud lik to study in warsaw, poland. Is it possiible for me to do my master's degree along with part time jobs workin for 15-20 hours a week. My major intention of comin to poland is to improve on my athletics career. Im basically a discus thrower. I came to know tat classes wil be only for 4 hrs a day. So i can concentrate on my training. Is it possible for me to earn my living ter wit part time jobs. Wil the polish people and universities be encouraging foreign sports men lik me. Please reply whether wat i've mentioned above r possible or not. Wud be very happy if i get replies soon