More days of either aerobic or strength exercise were associated with lower total cholesterol, LDL, HDL ratio and triglycerides, and higher HDL in both men and women. The association between exercise frequency and a positive blood lipid profile are in agreement with prior research . Interestingly, we did not observe a significant association between aerobic exercise frequency and total cholesterol in women, despite improvements in other blood lipids. This may be due to gender differences in lipid utilization during exercise , a physiological threshold to support reproductive function , or the concurrent rise in HDL, negating a net change in cholesterol.