The title says it all: "This is not CROSSFIT this is FUNCTIONAL PATTERNS". This is an extremely ergonomic and healthy way to workout. CrossFit is not safe. Seriously, it isn't. Most instructors are not knowledgable enough which is why CrossFit is so popular. It takes a few days to get a CrossFit certification. Lots of cling and jerky movements where as "Functional Patterns" is very round, front back side to side. Simply awesome!