Functional training focuses on exercises that allow you to build core strength, shred fat, enhance endurance, and strengthen all the parts of your body that you use every day. Functional training involves mainly weight bearing activities targeted at core muscles of the abdomen and lower back done in a group team setting. The 45 in the blitz name stands for 45 minutes. No more hours in the gym with no results. 45 minutes at blitz is all you need to get maximum results.