What does ck creatine kinase tell you about a person? what does it mean if it's slightly low? is there something i need to do with my lifestyle to correct it?

Nothing worrisome. Elevation is used as a marker for heart or skeletal muscle injury. Low is either not significant or may reflect lower muscle mass than average. I would not worry about it.

Agree with Dr. Ferguson. Low CK is not a cause for concern. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs.

Elevation of creatine kinase could suggest cardiac or skeletal muscle but CK-BB may indicate stroke., But normal or even low CK is of no pathological significance. Exercise with goal of increasing muscle mass may result in modest elevation.