Professional bodybuilding or pro bodybuilding can refer to bodybuilding for an income and/or possessing qualifications such as an IFBB or Wabba International Pro Card. A professional bodybuilder may be one who earns his or her primary income from bodybuilding. It is possible, though difficult except at the highest level, to earn a reasonable income purely from competition winnings. It is much more likely that a particular athlete will be sponsored by local companies and supplement manufacturers. Many bodybuilders use their newfound fame and knowledge to pursue business ventures such as higher-level personal training or opening their own gyms. Guest posing and public appearances also support income.