The Dr. Dangs Lab Fitness profile 2 has all the benefits of Fitness Profile 1 with the added advantage of Testosterone (free and total) and also liver metabolism markers such as SGOT and SGPT. Testosterone helps with the anabolic effects of muscle growth and strength. Helpful for assessing fitness and also the response of the body to supplements, this package is very helpful for anyone exercising / spending time in the gym frequently.